Member Since: 15 Sep 2012
Location: Gloucestershire
Posts: 94
Epb amber fault. Can release with brake pedal & switch seq.
Hi all,
Finally solved all issues ready for mot, but now epb is playing up!
I can put epb on ok, but when trying to release I get amber parking brake light and parking brake fault message. I can release the epb if I depress brake 3 times, pull up switch 4 times, and then press it down.
Is this a symptom of jammed epb module, or badly adjusted rear drums?
I have new discs and pads and calipers all round, including parking brake. I have adjusted as per bodsys brake bible and i have run through a bedding in procedure.
Do I need to get under. It works on occasion.
Appreciate advice.
Mike
19th Feb 2019 10:37 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10359
Read fault codes.
Have you caused it do you think?
19th Feb 2019 11:00 pm
MatcherMike
Member Since: 15 Sep 2012
Location: Gloucestershire
Posts: 94
Good question Pete!
I don't think I have. I removed the fuse early after I got it as epb was stuck on and I turned off with this process. All brakes were seized hence replacement but it would move.
I should of got codes. For some reason iid gives me a blank email when I export codes. I'll clear check and post tomorrow. There was nothing of note that I can remember.
Thanks for taking the time to reply
Mike
19th Feb 2019 11:10 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4626
Write down the codes and just post them here yµ (idµ - eAµ) ψ=mψ
20th Feb 2019 1:37 am
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1780
If all epb brakes where seized, have you checked that the cables that operate the shoes where free
20th Feb 2019 5:05 am
MatcherMike
Member Since: 15 Sep 2012
Location: Gloucestershire
Posts: 94
Hi,
I'm not sure of EPB status before hand. The calipers weren't in great condition and required replacement as were corroded. I didn't specifically check the EPB cable.
Tested tonight. On putting fuse back in i could engage and release brake ok. After a few goes it went amber brake fault. I could release by pulling brake switch up 3 times and then down and holding. Removing key put EPB back on, and after i restarted i couldn't release EPB, unless again pulling the brake on and pushing off (although just pulling once this time before pressing down).
At one point i had a fault putting the EPB on - red flashing park brake light accompanied by the amber light. i couldn't put EPB on but once i removed the key the EPB engaged ok. Releasing the EPB on startup would sometimes be ok, sometime require me to force it off.
So - very intermittent. I can always release it with a combo of switch pulling/pushing but only occasionally first time.
I cleared faults before testing and here's the faults after all the above:
Auxilary Heater
U1A44-6C (2E) Fuel level
Body Control
B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
( on 06-02-2018 08:22:56 at 9940 km )
B1C57-14 (6C) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
( on 06-02-2018 08:20:38 at 9940 km )
B1D14-15 (2E) Interior lamps 2 circuit - General electrical failure - circuit short to battery or open
( on 06-02-2018 08:22:50 at 9940 km )
Engine TDV6
P0578-00 (28) Speed control multi-function input A circuit is stuck
P0404-00 (2F) Exhaust gas recirculation control - circuit range/performance
P140D-00 (2F) Exhaust gas recirculation control circuit B range/performance
Parking Aid
B1B46-96 (6C) Rear right inner sensor - Component failure - internal failure
U0155-87 (28) Lost communication with instrument cluster control module - Bus signal/message failure - missing a message
U0140-87 (28) Lost communication with body control module - Bus signal/message failure - missing a message
U0300-55 (28) Internal control module software incompatibility - System programming failure - is not configured
Parking Brake
U2002-01 (A8) Switch general electrical failure - General failure information - general electrical failure
( on 06-02-2018 08:23:09 at 149124 km )
Ventilation
B1B74-00 (2F) Front foot-defrost mode stepper actuator
( on 06-02-2018 08:22:59 at 149124 km )
B1B75-00 (2F) Front foot-face mode stepper actuator
( on 06-02-2018 08:23:00 at 149124 km )
B1B76-00 (2F) Front left air blend stepper actuator
( on 06-02-2018 08:22:59 at 149124 km )
B1B77-00 (2F) Front right air blend stepper actuator
( on 06-02-2018 08:22:59 at 149124 km )
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( on 06-02-2018 08:20:41 at 149124 km )
20th Feb 2019 6:35 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10359
If you haven't used an EPB before, you need to hold the brake pedal down before pushing the release lever
2. Do not press the switch quickly. press/pull for 2 seconds.
the fault code says its the switch, like we said, I think it is like a TV remote control inside, may need cleaning with alchol
20th Feb 2019 8:10 pm
MatcherMike
Member Since: 15 Sep 2012
Location: Gloucestershire
Posts: 94
Been away all week so just looked at this. Replaced switch and it now works perfect (so far )
Just a couple of codes to sort and i'm hopefully good.
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