I have a little problem that is not major but its starting to get on my nerves. I have a 2005 XJR with the Brembo brakes and six months ago, I had a squeaking sound when backing-up. While doing my oil change at my dealer, they verified the problem and one of my calipers in the back was bad and they had to change it under my extended warranty . Took a big week to get the part and get it repaired. Six months later, the same squeaking sound starts again when backing-up and specially when the disks are wet.

Any suggestions?

Thanks

 

This is probably normal. I have had this on a number of vehicles, even those with ceramic brakes. If it bothers you that much, you can take the pads off in the rear, and add some brake pad lubricant at the contact points with the calipers. Also, you may try putting some anti-squeal on the backs of the pads.

 

Thanks for the tip I'm going to try the lubrication.

The only problem I have is that they changed the caliper because they told me that the calipers were not retrieving correctly and causing the squeaking + the unusual wear of the disk. Are Brembo brakes known to cause that kind of problem?

Thanks for the help

 

I'm not sure exactly what sort of brake caliper design the X350 has. If it is a "floating" caliper that slides on slider pins, often these become seized and prevent the caliper from sliding. This has happened to me before on other cars.

However, something tells me that this car probably does not have this design, since it probably has more than just one brake piston per caliper, meaning the caliper is probably mounted rigidly on the wheel hub assembly, and the pistons just come out to meet the pads/rotors without sliding on a pin.

Seems to me that it is pretty uncommon for an actual PISTON to seize up, especially on a car that's only 6-7 years old. This is why changing your brake fluid every couple years is so important (regardless of miles). Moisture gets in there and starts corroding stuff from the inside.