Parking Brake Fault Post Rear Brake Job
#1
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The electronic parking brake has always worked flawlessly.
Independent mechanic installed new rear brakes; sensor, genuine pads, genuine rotors, one genuine caliper.
I was told the parking brake was adjusted via the adjustment points on the rear disk. I can confirm the required parking brake bed in procedure (per the Bible) was conducted. However, the EPB was NOT put in to service mode before the rear brakes were replaced and adjustments made.
The bed in procedure was working up until the tenth and final pull on the EPB switch when I got a parking brake fault. The parking brake no longer functions. When it is pulled, alarms go off and the fault message pops up.
What now?
Independent mechanic installed new rear brakes; sensor, genuine pads, genuine rotors, one genuine caliper.
I was told the parking brake was adjusted via the adjustment points on the rear disk. I can confirm the required parking brake bed in procedure (per the Bible) was conducted. However, the EPB was NOT put in to service mode before the rear brakes were replaced and adjustments made.
The bed in procedure was working up until the tenth and final pull on the EPB switch when I got a parking brake fault. The parking brake no longer functions. When it is pulled, alarms go off and the fault message pops up.
What now?
#2
#3
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While I could manually adjust the parking brake at the rotors, the EPB will not enter service mode or the bed in procedure. Any sequence of pulls on the EPB triggers a fault and alarms.
Thinking about it, I guess I could remove the fuse, manually adjust, and hope it goes through the bed in when the fuse is restored and the EPB switch is pulled.
Thinking about it, I guess I could remove the fuse, manually adjust, and hope it goes through the bed in when the fuse is restored and the EPB switch is pulled.
Last edited by planetspacerover; 04-29-2020 at 08:56 PM.
#4
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You should still be able to enter service mode. Or you need a GAP tool or such to enter service mode. If all else fails, adjust them as is then enter service mode and just again. For the record, does it even say in the Bible that it must be in service mode for adjustment? Because if I recall it was not clear. I know service mode should be used for replacing rotors since it backs them off more, etc. But when I did my parking brake adjustments I dont think I was in service more. Or I was and not sure if I needed to be... been a while.
#5
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I plan on getting a GAP tool next week for this and other issues. If the gap tool clears the fault or puts the EPB in service mode, I'll try manually adjusting the brake, and go through the bed in procedure again. Thanks for the help.
The Bible instructs putting the EPB in service mode before removing the rear discs.
The Bible instructs putting the EPB in service mode before removing the rear discs.
Last edited by planetspacerover; 04-29-2020 at 09:03 PM.
#6
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The IIDTool reveals the following fault:
C1A00-4B (FB) Control module - System internal failure - over temperature
Could it really be that following the EPB bed in procedure the first time around overheated and destroyed the $1,095 module? This seems a bit of a poor design.
Incidentally, I manually adjusted the parking brakes, again, and entered the bed in mode via the EPB switch, but the switch does not activate the parking brake because of the above mentioned fault.
Additional EPB related fault read by the IIDTool:
U0159-87 (2E) Lost communication with parking assist control module - Bus signal/message failure - missing a message
C1A00-4B (FB) Control module - System internal failure - over temperature
Could it really be that following the EPB bed in procedure the first time around overheated and destroyed the $1,095 module? This seems a bit of a poor design.
Incidentally, I manually adjusted the parking brakes, again, and entered the bed in mode via the EPB switch, but the switch does not activate the parking brake because of the above mentioned fault.
Additional EPB related fault read by the IIDTool:
U0159-87 (2E) Lost communication with parking assist control module - Bus signal/message failure - missing a message
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