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Classic Cars

Where can I obtain assistance in obtaining parts and/or manuals for a classic Mercedes-Benz?

Contact our Vintage Parts Helpline here in the U.S. at 1-866-MB-CLASSIC (1-866-622-5277). You can also visit our Classic Community at http://www.mbusa.com/mercedes/#/eventsCommunity/. Also, the Mercedes-Benz Classic Center in Fellbach, Germany, assists customers worldwide with restoration issues for vehicles 25 years or older. They can be reached through our parent company's website, mercedesbenz.com.

Customer Service

How do I contact Trip Routing service?

If you are planning a trip and are interested in using our trip routing assistance, we suggest you contact us at least two weeks prior to your departure. You will receive a highlighted route showing major cities, points of interest and distances. This service is free for Mercedes-Benz owners - all that is required is the VIN (vehicle identification number) of your Mercedes-Benz. Call 1-800-FOR-MERCEDES and ask for Trip Routing.

Can I contact the Mercedes-Benz USA Customer Assistance Center?

Our Customer Assistance Center is open 24 hours a day, seven days a week, to assist you. If the information you seek is not at our Customer Care web page, contact us at 1-800-FOR-MERCEDES (1-800-367-6372), or send correspondence to: Mercedes-Benz USA, LLC Customer Assistance Center 3 Mercedes Drive Montvale, NJ 07645.

Miscellaneous Info

Where can I get replacement parts for a Unimog?

Contact the distributor for Unimogs, Ultimate All Wheel Drive, unimogusa.com.

Where can I obtain an owner's manual or service manual for my Mercedes-Benz?

To download a PDF version of manuals for most vehicles starting Model Year 2000, (Operator's, Comand, Maintenance, Service/Warranty) for US version vehicles, visit http://www.mbusa.com/mercedes/#/servPrtsOverview/.

You can also contact your dealer Parts Department in order to purchase an owners manual or service manual.

Where can I get assistance with Mercedes-Benz bus parts and service?

Contact Setra-Kassbohrer of North America at 1-800-822-8054 or setra-coaches.com.

Where can I obtain parts for a Mercedes-Benz industrial engine?

Detroit Diesel (detroitdiesel.com) is the distributor for Mercedes-Benz industrial engine parts. Please contact one of their authorized dealers, or contact us at 1-800-367-6372 for the Detroit Diesel dealer nearest your location

Where can I find replacement parts for a Mercedes-Benz truck?

Contact our sister subsidiary, Freightliner Corporation, for parts and service information on Mercedes-Benz trucks. They can be reached at 1-800-385-4357, or at freightliner.com.

Where can I find Guidelines for Rescue Services?

Safety has been and will always be the top priority for Mercedes-Benz. That's why all of our vehicles are equipped with state-of-the-art safety features to help protect you and your passengers on the road.

Our comprehensive safety philosophy includes making available to rescue personnel detailed information about our vehicles so that, in the event of an emergency, they can perform their jobs as quickly and effectively as possible.

The MBUSA Guidelines for First Responders document contains noteworthy features and essential information on occupant restraint systems, air bags, Tele Aid emergency call system, and high-strength steel construction. It also includes information on components that could prove dangerous to the vehicle occupants and/or first responders if handled improperly.

The Seat Belts and Air Bags document provides more in-depth detail about Mercedes-Benz seat belts, Emergency Tensioning Devices (ETDs), belt force limiters, air bag deployment logic, as well as the Occupant Classification System (OCS).

Where can I find information on Smart Cars?

MBUSA is the distributor of Mercedes-Benz passenger vehicles and light trucks in the U.S. Smart USA can be contacted directly at:

 

Smart USA c/o Internet Brands
909 Sepulveda Blvd.
El Segundo, CA 90245
Attn: Smart Rep.
Website: www.smartusa.com

Roadside Assistance

Is my vehicle covered by Roadside Assistance even though my warranty has expired?

It is possible for any Mercedes-Benz vehicle to qualify for the many benefits of Roadside Assistance regardless of age or mileage. Please go to MercedesRoadside.com for more information.

Tele Aid

What Tele Aid services are available?

Tele Aid offers in-vehicle safety and convenience services through two different subscription plans: the Security & Care Package and the Luxury & Convenience Package. The former includes services such as Automatic Collision Notification and Stolen Vehicle Recovery, while the latter also includes services such as Route Assistance and Voice-Delivered Traffic. For more information, please consult your authorized Mercedes-Benz dealer or call the Tele Aid Response Center toll free at 1-800-756-9018.

Who can I contact directly regarding my Tele Aid account?

For assistance with any aspect of your Tele Aid account or subscription plan, please call the Tele Aid Response Center toll free at 1-800-756-9018.

How do I cancel my Tele Aid service?

Tele Aid service can be cancelled over the phone or in writing. More specifically, you can either call the Tele Aid Response Center toll free at 1-800-756-9018 and provide a customer representative with your Tele Aid account password when asked, or you can fax a letter to 1-877-275-7761. Alternately, you can mail a letter to the following address: Tele Aid Customer Care, P.O. Box 167985, Irving, TX 75016-7985.

What are the differences between Tele Aid and Mercedes-Benz mbrace?

As the next generation of connected safety, navigation and convenience, Mercedes-Benz mbrace offers all the same services provided by Tele Aid, plus enhanced and expanded features, including the mbrace Mobile Application for compatible smartphones. Tele Aid and mbrace utilize the same hardware, but have different service providers.

Do I have Tele Aid or Mercedes-Benz mbrace on my vehicle?

If you purchased or leased a new Mercedes-Benz before November 16, 2009, and it is equipped with telematics hardware, you are currently receiving - or can begin receiving, upon activation - Tele Aid service. The Security & Care Package has a trial period of one year. By contrast, if your new Mercedes-Benz was purchased or leased on or after November 16, 2009, and it is equipped with telematics hardware, you are currently receiving - or can begin receiving, upon activation - mbrace service. The mbrace Package has a trial period of six months, and the option of three months of mbrace PLUS service. The trial begins on the day of lease or purchase. For more information, please consult your authorized Mercedes-Benz dealer.

How do I switch from Tele Aid to Mercedes-Benz mbrace service?

Because Tele Aid and Mercedes-Benz mbrace employ the same in-vehicle hardware, you would simply cancel your Tele Aid service (for details, see the Tele Aid FAQs) and then subscribe to mbrace by calling the Mercedes-Benz mbrace Response Center toll free at 1-866-990-9007. Customers who have purchased or leased their vehicles between November 15, 2008 and November 15, 2009 are ineligible at this time to convert to mbrace.

Vehicle Information

How can I check if my vehicle is involved in a recall?

Please contact our Customer Assistance Center at 1-800-FOR-MERCEDES (1-800-367-6372), or send correspondence to: Mercedes-Benz USA, LLC Customer Assistance Center 3 Mercedes Drive Montvale, NJ 07645.

How can I obtain the radio code for my vehicle?

See your authorized dealer's service or parts department with the vehicle identification number of your vehicle and proof of ownership. You can also contact us directly at 1-800-367-6372.

Who can assist me with programming the integrated garage door opener in my vehicle?

Please contact either our Customer Assistance Center at 1-800-FOR-MERCEDES, or HomeLink at 1-800-355-3515, www.HomeLink.com for step by step instructions.

How do I order a spare or replacement key?

Only you, or someone authorized by you can order a replacement key from your local Mercedes-Benz dealer. In order to do so, your dealer will require proof of identity and vehicle ownership with original documents. Click here to learn more. For additional information please contact your local authorized Mercedes-Benz Dealer.

Where can I find the technical documentation needed for servicing and repairing Mercedes-Benz vehicles?

At STAR TekInfo you´ll find all the technical documentation you need on servicing and repairing Mercedes-Benz vehicles. STAR TekInfo is an official Mercedes-Benz site offering more than 10,000 technical documents in one place, from special tools and equipment listings to diagnostic manuals to workshop resources, and more. Click Here to visit STAR TekInfo.

How do I program the garage door opener in my Mercedes-Benz?

The garage door opener seems like a very simple device. You push the button and the door goes up and down. But, behind the scenes the technology has evolved into some rather high tech devices driven by the need for higher security for the homeowner.

There are two types of garage door openers:
1. DIP Switch Programmable
2. Rolling Code

Which Type Do You Have?
Determine which type of garage door opener you have by opening the battery compartment on one of the handheld transmitters you use to operate your garage door.

1. If you see a row of tiny sliding levers inside your handheld transmitter, your opener uses a single code to operate every time and is a "DIP Switch" programmable type transmitter. There is a lack of security when using these old technology transmitters because someone either could choose the same code as your opener, or a thief using a code grabber (a radio receiver which steals your code) could then open your door.

2. If there are no switches, the opener is a Rolling Code type transmitter. This type of transmitter enhances security by using a new code each time the transmitter is operated, since codes which where previously used to operate the door are no longer recognized as valid. Use of this Rolling Codes started in 1996, and by 2000 most manufacturers had switched to this technology.

Programming Homelink Button
Warning! 

Before starting to program, ensure no one is standing under or near the garage door, as it may operate while programming the mirror!

Using the instructions in your vehicle's Operator's Manual, you must program a button in the vehicle by holding a working handheld transmitter near the garage-door buttons while pressing the button in the vehicle. These buttons are located either in your vehicle's inside rearview mirror or overhead console (see your Operator's Manual for complete details). It is recommended that you put new batteries in the handheld transmitter before attempting to program your vehicle, so the transmitter is able to transmit at the proper frequency or proper code.

For transmitters that control multiple garage doors and have multiple buttons, treat each button on the remote as if it was a separate transmitter.

Verification That The Homelink Button Was Programmed
Verification of whether the button in the vehicle is programmed is accomplished by pressing it. It should flash rapidly and then turn solid after 2 seconds.

Programming Homelink to the Opener
1. For DIP Switch Programmable transmitters no other action is necessary. The door should operate from either the mirror or the hand held transmitter.
2. For Rolling Code Transmitters it may be necessary to program the Homelink button into your opener before it will operate the door.

Then, using the instructions which came with your garage door opener, program the Homelink button into the garage door opener. Most opener's receivers will operate as follows. (Some may require a different procedure.) Locate its "training," "learn" or "smart" button, and press it. Within 30 seconds, return to your vehicle and press the desired Homelink button in your vehicle for 2 seconds, then release it for 2 seconds, and then repeat this up to three times, until the button is trained and your garage door operates.

Mercedes-Benz recommends that the handheld Rolling Code transmitter should be saved for when a new vehicle is purchased and needs to be programmed, and not used at the same time as the one in your mirror. This is because the button in the mirror has cloned the button from the original handheld remote, and is using the rolling code taken from it. This may in some cases cause the transmitter in the mirror to stop operating the opener, as the handheld or another vehicle transmitter may have already used the rolling code in your vehicle. Most openers can learn and simultaneously be linked to five or more remotes.

How can I obtain a vehicle brochure?

Brochures can be downloaded directly from the Class and Model pages on MBUSA.com, using the "Download Brochure" link. Hard copies are also available at your local Mercedes-Benz dealer.

Warranty

Can I purchase an extended warranty from Mercedes-Benz?

The Mercedes-Benz Extended Limited Warranty may be purchased through an authorized Mercedes-Benz Dealer (restrictions and limitations apply). For Model Year 2005 and later vehicles, there is the option to purchase coverage after 12 months from new vehicle delivery date. A surcharge will be added to the Manufacturer's Suggested Retail Price if purchased after 12 months from the new-vehicle delivery date. This program excludes AMG and V-12 models. Please contact your dealer for pricing and details.

Can I purchase extended coverage on my Certified Pre-Owned vehicle?

No - all Certified Pre-Owned warranty coverage must be purchased at the time of vehicle purchase.

Is it really necessary to use Genuine Mercedes-Benz service products in my vehicle? Can´t using other products save me money?

Mercedes-Benz Engineers have devoted tremendous amounts of time and effort to selecting lubrication products and establishing service intervals that help ensure a high level of performance and durability over many years of driving. Using Mercedes-Benz service products will protect you from expensive repair costs resulting from use of inferior products.

Approved Service Products are also designed to protect your engine and transmission from contaminants, particulates and sludge build-up. Non-approved products could potentially cause long-term durability and dependability issues including damage to seals, surfaces, coatings and mechanical components. They may also create emission-related problems and lead to oil sludge build up. The use of aftermarket flushing procedures is not recommended since they can force contaminants past valves and seals, creating subsequent performance issues and component damage that may not appear until many miles or months later. Further, if non-approved maintenance products or procedures have been used, a major engine, transmission or driveline repair may not be covered by your Mercedes-Benz warranty. Using only Approved Service Products and adhering to factory-recommended maintenance intervals are the most cost-effective ways to ensure your vehicle is properly maintained and performs as designed.

Wireless Telephone

Where can I find information on compatible Bluetooth phones and pairing instructions for my vehicle?

To find a list of compatible Bluetooth phones or instructions on pairing an existing phone, please go to www.mbusa-mobile.com. The website lists all phones which have been tested and approved by Mercedes-Benz to perform at an optimal level in your vehicle. Note that a mobile phone not listed can work in your vehicle; however, connectivity and performance with vehicle cannot be assured. If you have any additional questions, please call 1-800-FOR-MERCEDES or visit your local Dealer.

Does my integrated phone system have Bluetooth capability?

Bluetooth Interface Modules are available for purchase through Auto Wireless Solutions at 1-800-266-7746 or wireless4MB.com. Some handsets may not be compatible.

For a detailed listing of compatible handsets including instructions for pairing with the Bluetooth Interface Module and a description of the features that each handset offers when connected with the Bluetooth Module, visit wireless4mb.com.

Mercedes-Benz mbrace

What mbrace services are available?

Mercedes-Benz mbrace offers a combination of Safety & Security Services, Navigation & Destination Planning Services, and Convenience Services in two different packages: mbrace and mbrace PLUS. These two levels of service give you the freedom to choose the plan that best suits your needs. For more information, please consult your authorized Mercedes-Benz dealer or call the mbrace Response Center toll free at 1-866-990-9007.

What are the differences between Mercedes-Benz mbrace and Tele Aid?

As the next generation of connected safety, navigation and convenience, Mercedes-Benz mbrace offers all the same services provided by Tele Aid, plus enhanced and expanded features, including the mbrace Mobile Application for compatible smartphones. Tele Aid and mbrace employ the same hardware, but have different service providers.

Does my vehicle have Mercedes-Benz mbrace or Tele Aid?

If you purchased or leased a new Mercedes-Benz before November 16, 2009, and it is equipped with telematics hardware, you are currently receiving - or can begin receiving, upon activation - Tele Aid service. The Security & Care Package has a trial period of one year. By contrast, if your new Mercedes-Benz was purchased or leased on or after November 16, 2009, and it is equipped with telematics hardware, you are currently receiving - or can begin receiving, upon activation - mbrace service. The mbrace Package has a trial period of six months,and the option of three months of mbrace PLUS service. The trial begins on the day of lease or purchase. For more information, please consult your authorized Mercedes-Benz dealer.

How do I switch from Tele Aid to Mercedes-Benz mbrace service?

Because Tele Aid and Mercedes-Benz mbrace employ the same in-vehicle hardware, you would simply cancel your Tele Aid service (for details, see the Tele Aid FAQs) and then subscribe to mbrace by calling the Mercedes-Benz mbrace Response Center toll free at 1-866-990-9007. Please note, however, that customers who purchased or leased their vehicles between November 15, 2008, and November 15, 2009, are ineligible to convert to mbrace at this time.

How do I change or cancel my mbrace service?

For help upgrading, changing or canceling your mbrace account, please call the Mercedes-Benz mbrace Response Center toll free at 1-866-990-9007.

Who can I contact directly regarding my mbrace account?

For assistance with any aspect of your mbrace account or subscription plan, please call the Mercedes-Benz mbrace Response Center toll free at 1-866-990-9007.

Driving & Handling

My vehicle seems to pull to one side when driving. Does this mean I need an alignment?

In some areas, roads are shaped or pitched such that the pavement near the center of the road is noticeably higher than the shoulders. This is to promote water drainage. If the steering wheel is released or the driver does not steer the vehicle on its intended path, it may drift or 'pull' to one side. Just as it is natural for a car to roll down a hill, there is an equally natural tendency for a car to drift toward the side on a laterally sloped roadway. While curved roads are often 'banked' toward the inside of a curve to promote safer cornering, straight roadways that slant to one side can require some force on the steering wheel - in the opposite direction - to maintain a straight-ahead path. Such behavior on a sloping road is not indicative of any misalignment of the wheels, especially if your vehicle tracks straight on a level road.

Why does the brake pedal in my hybrid Mercedes-Benz feel different the first time I step on the brakes after I start the vehicle and sometimes during normal driving?

Hybrid vehicles utilize regenerative and conventional hydraulic braking to reduce the speed of the vehicle. For regenerative braking, the kinetic energy of the decelerating vehicle is absorbed by the electric motor to generate a brake torque. The generated electrical energy is then fed to the high voltage battery for storage. Conventional hydraulic brakes utilize hydraulic fluid to apply pressure to the brake pads which squeeze against a rotating brake rotor. Friction is created between the pads and rotor which generate a brake torque to stop the vehicle.

Depending on the driving conditions, the total braking torque requested by the driver can be divided into a regenerative component and a hydraulic component. If the required total braking torque can be achieved using regenerative means alone, then none of the braking is done hydraulically. In this case deceleration is achieved solely by using the electric motors to generate electricity.

Due to the operating principals involved, the perceived brake pedal feel may be different during regenerative braking compared to conventional braking. On the regenerative braking system, there is a length of free travel integrated into the connection of the brake pedal. This is used during the regenerative braking function. A pedal force simulator is used to create an artificial pedal resistance which mimics the brake pedal feel of conventional hydraulic brakes.

During the first brake actuation, the system is checked for proper operation and the regenerative braking system is activated. The pedal force simulator is switched off for the first pedal application, resulting in slightly longer pedal travel compared to subsequent brake pedal applications when the system is active.

If an ABS (Anti-Lock Brake System) intervention takes place, regenerative braking is terminated for this brake application and the braking torque is provided solely via the conventional hydraulic brakes.

Regenerative braking is not possible below speeds of approximately 13 MPH. As soon as the vehicle drops below a speed of approximately 13 MPH during a brake application, the system switches from regenerative braking to hydraulic braking, resulting in a change of brake pedal feel and travel.

Maintenance

I have my car washed regularly and yet the wheels have stains which cannot be removed. Why?

Aluminum alloy wheels are finished with a number of coatings, including paint in some areas and a protective clearcoat over the entire surface of the wheel. Many car washes use acid-based cleaners to remove brake dust and road grime very quickly in order to maximize the throughput of vehicles in the wash lane. Acid-based chemicals can also be found in high-strength cleaning products. These products can leach through the clearcoat and leave visible dark streaks or runs on the wheel which cannot be washed off. These products can also remove the corrosion protection applied by the factory to the wheel lugs, brake hardware and other components visible near the wheels. When this happens, these items can begin to corrode. Components that are damaged by non-approved cleaning solutions are not covered under the Mercedes-Benz warranty. Only approved Mercedes-Benz paint care products and cleaners must be used. Contact your Mercedes-Benz Dealer for approved car care and wheel cleaning products. Many car washes avoid the use of acidic based cleaners for the above-referenced reasons. Ask your car wash if they use acidic cleaners and if so, seek another professional car wash that does not.

Is there any real benefit to aftermarket paint sealants?

With the introduction of Scratch Resistant Clearcoat (SRC) starting in the 2002 C-Class, and in the entire model line-up since model year 2008, your Mercedes-Benz was manufactured with one of the most advanced paint finishes in the automotive industry. Scratch Resistant Clearcoat (SRC) uses "nano-paint technology" comprised of microscopic ceramic particles that make it extremely durable and remarkably protective of the color coat beneath. This is particularly beneficial in protecting against swirl marks, minor scratches and even many chemical contaminants. However, there still exist numerous natural and man-made challenges to your paint's gloss. Some examples are; highly acidic bird droppings, industrial fallout such as acid rain and metallic dust from train wheels or factories. Car wax and even many modern aftermarket paint sealants provide some protection, but can be extremely short-lived. Carnauba wax, a vegetable product found in high-quality car waxes, can lose its effectiveness within 6-8 weeks. Genuine Mercedes-Benz "Nano Paint Sealer Set" can last up to a year and is specifically designed for use on high-tech surfaces such as Mercedes-Benz SRC. It contains no wax or silicone; instead it "links" with the nano-particles to provide a simple and effective long-term seal without etching or abrading the paint finish. Genuine Mercedes-Benz sealants are ideal for owners who want long-lasting paint protection without a lot of effort or frequent reapplication.

What is the best way to clean the screen of my vehicle's in-dash COMAND system? Can I use household window cleaner?

The screen for the navigation and audio system (known as the COMAND system) in your Mercedes-Benz is a "Thin Film Transistor Liquid Crystal Display" (TFT LCD) that´s very similar to the screen in a laptop computer. It not only uses advanced micro-technology to operate, it's also coated to minimize glare and remain sharp and vivid in nearly all environmental conditions. Ordinary household window cleaners, paper towels and ordinary cloths must never be used, as the alcohol or ammonia in the cleaner combined with the abrasive nature of the paper or cloth will damage the screen. However, virtually any computer-screen cleaning product, available at office supply stores, discount retailers or electronics stores, can be used. Just make sure it's alcohol-free, ammonia-free and includes an anti-static component. These inexpensive products are specifically designed to protect the coating and resist the accumulation of dust while cleaning the screen. Cleaning sprays must not be used, as the sprayed liquid can seep beyond the edges of the screen into the electronics of the unit and cause permanent damage to these sensitive internal components.

Why is it important to use Mercedes-Benz-Approved Tires?

The MBUSA Tire Program only includes tires that are approved for use on Mercedes-Benz vehicles. All tires in the program were selected to provide the performance and comfort characteristics specified by Mercedes-Benz.

Daimler AG performs extensive evaluations to determine which tires are best suited for use on Mercedes-Benz vehicles covering many areas, such as wet and dry traction, stability, tread life, acoustics, rolling resistance (fuel economy) and comfort, in addition to the basic requirements of load and speed ratings. These evaluations determine which brands and tire types will be approved for use on Mercedes-Benz vehicles.

While any tire of the specified size, speed and load rating may be fitted to any Mercedes-Benz vehicle, one should be aware that tires not specifically approved by Mercedes-Benz for use on its vehicle may not provide the safety, performance and comfort intended by Mercedes-Benz for your vehicle.

The MBUSA Tire Program provides options in all approved sizes to meet most customers' brand preferences. Our tires are competitively priced and offer high technology further proving that a Mercedes-Benz dealership with its Certified Service is the best place a Mercedes-Benz owner can get the correct tires for their vehicle.

My tire pressure warning illuminates occasionally. What does this mean?

There are a few factors that could cause the tire pressure warning to illuminate, one of which is a leaking tire. It is normal for a properly functioning tire to lose air pressure over time - there are a couple of reasons for this: 1) air can diffuse through a tire at a rate of 1-2 psi per month; 2) a tire typically loses 1-2 psi of pressure for every 10-degree (Fahrenheit) drop in ambient temperature. When your tires are warm, whether from driving or being in an enclosed garage, their pressure will be significantly higher than after the vehicle has been parked outside on a cold winter day. This change alone could trigger your Tire Pressure Monitoring System (TPMS) warning light.

The recommended inflation pressure listed in your vehicle's Operator's Manual or on the label inside the fuel door is a "cold" pressure, meaning the car has been parked outside in ambient temperature conditions for at least an hour and driven less than one mile since being parked. Mercedes-Benz recommends you check tire pressures with a high-quality gauge (accurate to 1 psi) at least once per month and not to wait for the TPMS indicator to illuminate. See your Operator's Manual for information about resetting your vehicle's TPMS after correcting pressures, rotating or replacing your tires.

How often should the brake fluid in my Mercedes-Benz be changed? Can any mechanic do it?

The brake system of a Mercedes-Benz consists of an interconnected array of components which operate with precision, speed and often extreme force over a wide range of operating temperatures and environmental conditions. From the brake calipers at each wheel, to under hood components such as the master cylinder and pump for Antilock Brake System (ABS) and Electronic Stability Control (ESP), the brake system contains complex parts that rely on brake fluid to perform their hydraulic tasks. Brake fluid is highly hygroscopic which means it tends to absorb moisture with age. This moisture consequentially creates corrosion within internal brake components and decreases the boiling point of the brake fluid, reducing braking effectiveness.

The recommended interval for replacing brake fluid is every 2 years or 20,000 miles, whichever comes first. The procedure used to replace brake fluid must be performed using approved pressure bleeding machines and "DOT 4 plus" brake fluid. The machines that are used by Mercedes-Benz technicians are designed to operate at pressures which ensure proper evacuation of the fluid and won't damage any of the precision braking components. These machines also ensure that new brake fluid entering the brake system is free of moisture.

If non-approved fluids are used or if the brake fluid becomes contaminated with mineral oil, then severe damage to brake components or brake failure can occur. It is essential that only qualified technicians using Mercedes-Benz approved equipment, parts and fluids perform maintenance or repairs on Mercedes-Benz vehicles.