Technical articles about cars. Mercedes - Benz. Mercedes Parts, Mercedes Repair, Diy, How to repair car, w204
Front Brake Rotor or Disc Replacement - C Class - W204 - Mercedes-Benz
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Front Brake Rotor or Disc Replacement - C Class - W204 - Mercedes-Benz
Front Brake Rotor or Disc Replacement
Time: 2 hours
Tab: $60 to $200
Talent: 2
Tools: 18mm socket, T27 Torx, floor jack, jack stands, wheel chocks,safety glasses
Applicable Models:
Mercedes-Benz C250 (2012-14)
Mercedes-Benz C300 (2008-14)
Mercedes-Benz C350 (2008-14)
Parts Required: Rotors, hardware
Hot Tip: Use new slider bolts
Performance Gain: Car stops better
Complementary Modification: Replace Rotor or disk
Besides physical damage there are basically two ways your rotors can go bad on your Mercedes. The first way is they just wear out. All rotors have a minimum wear thickness on them (that is usually stamped on the rotor). Once they get below this thickness they need to be replaced. If you are going to measure the thickness of the rotors make sure to measure in several places, as the rotor can wear unevenly. The second way they go bad is by warping. If you are feeling a pulsing in the brake pedal when braking, and it is proportionate to the speed of the vehicle you probably have a warped rotor. This is usually caused by hot spotting the rotor by late braking then keeping the pad fully depressed on the rotor while stopped. The heat from the braking trapped by the pad over time will warp a rotor. Rotors can also get heavily grooved. This can also be a cause to replace them.
When replacing your rotors always replace them in pairs. You should also replace the brake pads as well, especially if the rotor was heavily grooved. You want to start with two flat surfaces (the rotor and pad) rubbing against each other when seating the new brakes in. This will lead to better braking performance and eventually longer life from the components.
This is also a good time to give the system a good bleed and get all of the braking system like new.
Safely jack up and support the front of the vehicle and remove the front wheels. Please see our article on safely lifting and supporting your Mercedes W204
Replace your warped or worn front rotors with help from this article
Applies to: C350 (2007-14), C180 (2007-14), C200 (2007-14), C230 (2007-14), C250 (2007-14), C280 (2007-14), C300 (2007-14), C320 (2007-14)
Tumble Flap Actuator Repair - C Class - W204 - Mercedes-Benz Tumble Flap Actuator Repair Time: 1 hour Tab: $300 Talent: 1 Tools: T30 Torx, small flathead screwdriver Applicable Models: Mercedes-Benz C350 (2008-14) Mercedes-Benz GLK350 (2010-14) Parts Required: Actuator repair kit, silicone grease, blue Loctite Hot Tip: Lube the ball cups Performance Gain: Better engine performance Complementary Modification: New injector O-rings Along with the variable intake runners on the intake manifold on the Mercedes C350 the manifold also has tumble flaps. These tumble flaps on each side of the intake help swirl the air entering the combustion chamber helping with performance and economy. While the system works reasonably well, over time carbon will build up on the flaps and cause more stress on the plastic actuator arm than the system was designed to handle. This usually results in the failure of the plastic pivot lever where it meets the actuator arm. If you drive the car long ...
Battery Connection Notes and Replacement - C Class - W204 - Mercedes-Benz Battery Connection Notes and Replacement Time: 30 minutes Tab: $0 to $200 Talent: 1 Tools: 13mm socket and extension, 10mm wrench Applicable Models: Mercedes-Benz W204 (2008-15) Parts Required: Battery Hot Tip: Store any aftermarket radio codes you may need Performance Gain: Car starts Complementary Modification: Change cabin air filter The battery in the Mercedes W204 is located in the rear right hand side of the engine compartment by the A-pillar and window base and is covered by a plastic air box. When replacing your battery make sure to use a high quality unit; they tend to last longer than the cheaper ones. Replacing the battery is easy and can usually be done in less than 30 minutes. This is a great job to start your DIY journey. Working safely with your battery is an important aspect of fixing things yourself. Before disconnecting your battery, remove the key from the vehicle and store it in...
Front Stabilizer Bar Replacement - C Class - W204 - Mercedes-Benz Front Stabilizer Bar Replacement Time: 2 hours Tab: $170 Talent:2 Tools: E12 Torx, T40 Torx, 18mm, 13mm wrench Applicable Models: Mercedes-Benz C250 (2012-14) Mercedes-Benz C300 (2008-14) Mercedes-Benz C350 (2008-14) Parts Required: New stabilizer bar and hardware Hot Tip: Don't let the bar fall on you Performance Gain: Better handling If you are starting to hear a knock sound when you go around a corner there is a good chance your sway or stabilizer bar bushings are starting to go bad. Unfortunately, the rubber bushings on the stabilizer on the W204 are vulcanized to the bar and cannot be replaced separately. This means you will need to drop the bar and replace it with a new one. All of the mounting hardware is considered single use so make sure you order new hardware when ordering the bar. You will need to jack up the car and remove the front wheels along with the under body trays to perform...
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