STEP 1. M.U.T.-III CAN bus diagnostics
STEP 2. M.U.T.-III diagnostic trouble code
STEP 3. M.U.T.-III diagnostic trouble code
STEP 4. Symptom recheck after erasing diagnostic trouble code
Is the diagnostic trouble code set?
Replace electric parking brake ECU. Intermittent malfunction.
STEP 5. Symptom recheck after erasing diagnostic trouble code
Is the diagnostic trouble code set?
Replace AWC-ECU. Intermittent malfunction.