2020 GLC300 Break Pads and Rotor Change ???
Questions:
1. My car is 26K miles (41K Kms) is it normal to change rotors that early? when i looked at them visually i do not see any damage, the look pretty smooth.
2. should i just change breakpads and keep rotors as is?
3. Upon checking price of the parts on MB usa site break pads and rotors cost close 1200 US$ , then why dealership is charging that high? could 1600$ just the labor cost?
4. Is it okay to get it done from some other well reviewed or recognized repair shop? will it void my cars warranty?
Thanks
Amol



Questions:
1. My car is 26K miles (41K Kms) is it normal to change rotors that early? when i looked at them visually i do not see any damage, the look pretty smooth.
2. should i just change breakpads and keep rotors as is?
3. Upon checking price of the parts on MB usa site break pads and rotors cost close 1200 US$ , then why dealership is charging that high? could 1600$ just the labor cost?
4. Is it okay to get it done from some other well reviewed or recognized repair shop? will it void my cars warranty?
Thanks
Amol
It's possible the front pads are worn out but highly unusual that the rears are since they don't wear at the same rate. Rotors can look smooth and be out of round. Is there any vibration or shaking when applying brakes? It's possible to change pads only but the rotor must be measured to make sure it is outside of minimum thickness and would help to know that it's not warped by measuring the total indicated runout (look for YouTube videos for explanation). Those charges aren't discounted. They look book rate. The warranty does not say it must be serviced by a dealership. Just document the work and parts used. Did they mention that you're due for a brake fluid service? Every 2 years I believe.
Also depending on driving parameters and not knowing yours, normal day to day driving would have you change your discs after your second set of pads were done…as in, about to change to your 3rd set then change rotors too.
If your car is still under the warranty for Service and Repair, the dealer won’t like it that you do the work yourself and may void the warranty because they can’t accept or certify either a 2nd party or DIY repairs. That may be different for the NA market so check.
Hope that helps…if not my ba
Last edited by Bloom_Phaze; Oct 25, 2022 at 02:21 AM.
Brake pad life varies greatly depending on driving style. Rear brake pads may wear faster if your vehicle is equipped with the lane keep assist function, which uses the rear brakes to prevent you from drifting into another lane.
You should verify the pad thickness on all four wheels. An "OK" result is over 7/32" (5 mm). You might also check with another MB dealer.
Your dealer quote is extremely high I'd walk away and look for an independent mechanic with a good reputation and solid MB experience. Brake work is not rocket science and is definitely a DIY option but some knowledge and mechanical expertise are necessary.
I would start with a check of the brake wear sensors. It's possible that the wiring has been damaged or a sensor has shorted out. Then check the wear thicknesses of the brake pads and rotors. If they need changing you don't need to go with MB. In fact I know owners who proactively switch to non-OEM brands in order to improve brake performance and/or reduce brake dust. I recently changed the pads and rotors on my wife's GLK to Brembos but there are a number of reputable brands available. A bit of research will tell you which brand/pad compound best suits your needs. Providing you use a reputable brand and keep your receipts you won't have warranty issues.
Good luck


