Must have missed this as it was posted a few weeks ago."Most brake pads are equipped with sensors built in to the brake pad material. When a brake pad that's 12 mm thick new wears to approximately 3 mm of pad life remaining, the metal sensor usually becomes exposed and makes contact with the disc causing a squealing sound."
"The brake pads are positioned in the caliper. A metal tab fastened to the pad assembly alerts drivers when the pads have thinned out. As the pads wear down, the tab will rub against the rotor, causing a squealing sound when the brakes are applied. ... If you wait too long, the brakes may begin to grind.”
"Brake pads do a lot of work to stop your car and tend to need the most attention. You'll know it's time to replace the brake pads if you hear - Squealing: This noise is there for you. It’s not fun to hear, but the pads are made to squeal when they are almost worn out. Some cars are equipped with brake pad sensors. When the pad wears down, the sensor touches the brake rotor, and that produces a squealing sound."
These are quotes from various websites addressing brake squealing - unfortunately all brake pads are not so equipped !
Sell it! I bought my 2017 GLC new in late 2016. I drive a lot and have 108,000 miles on it now. They have tried to fix them 3-4 times now and they still squeal when backing up. I have dealt with this for 108,000 miles and Mercedes just kind of chuckles about it now. Get rid of the car before it drives you crazy.I want buy GLC COUPE 260, But very worried appear brake squeaky
Hello, I was wondering if you did have the disks replaced and if this eliminated the issue?HI There,
Im currently driving a GLC 250 4 matic, Year 2016.
My milliage is currently at 52,000km.
I was advised to change all 4 of my Brake discs.
This would be the first time i am changing my Brakes disc.
I have changed my brake pads 2 x within the last 3 years.
Is this normal?
Looking forward to your reply.
I changed the front pads from ceramic to semi metallic to change up the harmonics of the original system. Squeal went away completely. I had been putting up with it for years. Dealerships were of no help during several visits.Hi
Not so sure about the last post saying they squeak when worn, the don't need that as the dashboard warning light will activate when the pads are 80% worn giving plenty time to change them.
Squealing can be an issue on the C class and GLC especially if the pad surface becomes glazed when a couple of sharp braking actions will usually clear it however they do seem to squeal when reversing and even my mates' 3 year old C200 does that.
I had the issue with my GLC, pushed the dealer hard and they replaced the rear pads under warranty as MB know all about the problem. Have only driven 700 miles since but no squealing at all since they were changed.