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SwissXC90 · Jun 3rd, 2020, 08:38

I had high pitched squealing on my XC90, sometimes at low speeds, some times at motorway speeds

Was a sticking caliper on the front right - but it was really hard to diagnose where the sound came from. As a driver, you couldn't determine the source of the noise.

One day I went out with my digital thermometer after a drive home and checked all four wheels, and the front right was distinctly warmer than all others. Like over 20°C warmer. Thus we knew it was the front right wheel.

Dealer disassembled, cleaned and lubricated the caliper.
No more squealing since.

Your hot disc will definitely be the culprit.

Jun 3rd, 2020, 08:38	#6
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	I had high pitched squealing on my XC90, sometimes at low speeds, some times at motorway speeds Was a sticking caliper on the front right - but it was really hard to diagnose where the sound came from. As a driver, you couldn't determine the source of the noise. One day I went out with my digital thermometer after a drive home and checked all four wheels, and the front right was distinctly warmer than all others. Like over 20°C warmer. Thus we knew it was the front right wheel. Dealer disassembled, cleaned and lubricated the caliper. No more squealing since. Your hot disc will definitely be the culprit. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.