How To Replace A Mercedes-Benz GLC Rotor
The idea of replacing disc brake parts like rotors can be daunting. If you own a Mercedes-Benz GLC and if it has rotors that need replacing, we’re here to help. You can take care of this replacement with a few basic tools in a matter of a few hours.
How To Know When It's Time To Replace Your Rotors
The first clue that you're driving with bad rotors is a noticeable decrease in your car's braking performance. You'll notice the following signs:
- Longer stopping distances
- Vibration or pulsation when braking
- Thumping sounds when braking
A visual inspection is one of the easiest ways to confirm that your rotors need replacing. You can find instructions here.
Before Removing The Rotors
The first thing you need to do before replacing your rotors is to order a new set of rotors. We always recommend replacing a set of rotors on the same axle instead of replacing only one bad rotor. By doing this, you'll ensure that both of your rotors on the same axle have the same amount of wear. When one rotor is more worn than the other rotor, your Mercedes may pull to the side while braking.
At Suburban Auto Parts, you'll find genuine OEM rotors at wholesale prices. Look up your Mercedes-Benz GLC in our catalog of brake parts to see how much money you can save on brand new OEM rotors. Please contact us if you need help finding the right part number(s) for your GLC.
How To Replace The Rotors On Your Mercedes-Benz GLC
First, you need to remove the wheel and caliper to allow for access to the rotor. Next, replace the rotor. To make sure that the process goes smoothly, follow these steps:
1. Removing The Wheel And Caliper
This set of steps for removing the calipers is based on the 2016-2022 Mercedes Benz GLC.
- Open your hood and then release the brake fluid reservoir cap. This will allow you into the caliper without building pressure in the braking system.
- Loosen all the lug nuts on each wheel you're planning to remove.
- Lift the GLC and then support it with jack stands. You may want to turn the steering wheel to one side. This will allow you more room behind the caliper later.
- Remove the first wheel you're going to be working on.
- Find and release the brake wear sensor. It has a plastic clip that allows the wires to release.
- Remove the 8mm bolt holding the brake wear sensor housing in place. It's on the inner side of the brake caliper.
- Remove the small metal wire running between the retaining pins on the rear of the caliper.
- Use a hammer to gently tap the retaining pins out of the caliper.
- Remove the brake pads from the caliper.
- Remove the two 21mm bolts on the rear side of the caliper.
- Pull the caliper off the rotor. Be aware that the brake fluid line is still running into the caliper. Don't put any stress on the brake fluid line by letting the caliper hang from it. Instead, set the caliper on the control arm or another area to give the brake fluid line some slack.
2. Replacing The Rotor
Now that the wheel and caliper are out of the way, it's time to replace the rotor.
- Use a T30 Torx bit to remove the retaining bolt from the rotor.
- Gently pull on the old rotor to remove it from the hub.
- Line up the new rotor to ensure that the disc sits like the old rotor.
- Tighten the Torx retaining bolt.
- Put everything back together in the reverse order of removal.
- Install the wheel and then put the lug nuts back on by hand.
- Lower the GLC and then tighten all the lug nuts with a lug wrench.
Repeat this process with the rest of the rotors on the car.