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joachimwerner1

Brake pedal feedback and squeaky brakes issue

My 2012 Mercedes ML gasoline engine has a weird vibrating brake pedal and squeaky brakes after 76871 km I checked the brake fluid and it's fine Could it be the calipers or shoes or hydraulic brakes Could undervoltage be the cause

4 comment(s)

stefanraven10

I have a similar model The squeaky brakes and pedal feedback could be linked Check your car's voltage regulator Undervoltage can definitely cause issues with the ABS system, which can affect braking performance and give you strange feedback Is the ABS kicking in prematurely, or do you notice the issue more at lower speeds

joachimwerner1 (Author)

I think it is at lower speeds How would undervoltage cause the squeaky brakes though And how can I test the voltage regulator

stefanraven10

Undervoltage can interfere with the ABS module's operation, which can lead to uneven brake force distribution and cause the squeaking The ABS might be activating unnecessarily Honestly, testing the voltage regulator properly requires diagnostic tools I'd recommend getting it checked by a workshop to avoid further complications It’s worth the peace of mind

joachimwerner1 (Author)

I took it to a trusted mechanic, and you were spot on about the undervoltage messing with the ABS Turns out, a faulty voltage regulator was causing all the problems They replaced it, and the squeaky brakes and weird pedal feedback are completely gone The repair cost me 240€, which I think is fair I appreciate the help

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