Lyriq E-Brake Failure: Warning Light Stays On

A brake fault like this needs immediate attention for vehicle safety. Had a similar issue with my 2020 Cadillac ELR where the electronic parking brake became unresponsive. The brake control unit showed multiple error codes. The root cause was a failed brake calliper motor combined with a faulty brake sensor. These system glitches are common in electronic parking brake systems when the actuator motor wears out. The repair involved: 1. Complete diagnostic scan 2. Replacement of the electronic brake calliper motor 3. Brake sensor recalibration 4. System reset and testing This was a serious repair requiring specialized diagnostic equipment. The electronic parking brake is a critical safety component, driving with a malfunctioning system puts you at risk. The repair took about 4 hours at the shop. For your Lyriq, I recommend finding a certified dealer or specialist shop with experience in electronic brake systems. They should perform a full diagnostic scan before replacing parts. Sometimes what appears as a brake fault can be related to other electrical components in modern EVs. The most important step is getting proper diagnosis with professional equipment. General mechanics often lack the specific tools needed for these advanced brake control systems.

Thanks for sharing your experience with the electronic brake calliper repair. Very similar to what I am experiencing with my Lyriq parking brake. Do you remember the total cost for your repair? Curious if any additional brake sensor issues came up after the fix was completed. My local shop estimated quite a high price and I want to compare before proceeding.

Following my brake diagnostics experience with the ELR, I can confirm the repair was successful and cost 505€ for replacing the defective electric motor in the brake calliper. The electronic brake system has worked flawlessly since the fix, with no recurring sensor issues or warning lights. The investment was worth it since proper brake control is essential for vehicle safety. Getting the repair done at a shop with the right diagnostic equipment was key, they identified the exact component failure in the electronic parking brake mechanism without replacing unnecessary parts. Make sure your shop performs a complete system check after the repair. The brake sensor calibration is a critical step that some technicians overlook. When done correctly, the fix should be permanent with no lingering electronic brake faults. Looking at your estimate, the pricing sounds in line with what these specialized repairs typically cost, considering the technical expertise and equipment needed for modern brake control systems.

Finally got the parking brake issue sorted at a different shop. Their brake diagnostics revealed the same calliper motor problem you mentioned. Total repair cost came to 480€, slightly less than expected. The new technician actually showed me the faulty components and walked through the complete brake control system testing. Much better experience than my first attempt at getting it fixed. The parking brake now engages smoothly and the warning light is gone. They also performed a thorough system check and sensor calibration like you suggested. Good call on that, apparently the first shop missed this crucial step in their assessment. Feels great having a properly functioning brake system again. No more worrying about parking on hills or unexpected brake fault warnings. Thanks for sharing your repair details. Really helped me understand what to expect and ask for during the service.