Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
What a delicate thing is the EPB
EDIT 10:22
Bumped the car into the kerb while parking. Immediately had the boing and red flashing light. I panicked and reversed out to drive to try and make it go away and it went away. Phew,I thought.
Got home, pulled up handbrake switch and boing and red flashing light. Stuck IID tool on and it read an EPB overheat fault (I dont recall code). I cleared the fault but flashing light persists and no EPB. Pulled EPB fuse and left overnight.
Tried it this morning. Red light flashing immediately and yellow light on when i pull up the hand brake switch. EPB is not jammed and emergency pull has not been used. Just will not work.
IID reads C1A00-4B (FB) Control Module, System internal failure- over temperature
Cant seem to find any live readings of the EPB though.
Before I start the long journey of trying to get at the EPB module can anyone think of why the bump may have started all this off and is there anything else I should look at first?
Cheers
Chris
24th Jun 2024 8:47 am
oldandslow1
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
I should have said that I serviced the brakes after the problem first came up and they were all clean and moved easily. I set them according to Bodsys method and tried out the EPB with the same depressing result.
24th Jun 2024 9:31 am
SpiderBaby D3 Decade
Member Since: 21 Sep 2007
Location: Liverpool
Posts: 1410
The wiring to the EPB can be a little 'fragile' in places.
I guess the bump could have caused a break in one of the joins?
If yours is an early D3 there's a join behind the NSF wheel liner and one near the NSR shock.
Easy - if fiddly - enough to check.I see no ships........
24th Jun 2024 11:31 am
oldandslow1
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
hmmm, interesting, NSF Could explain why it temporarily became ok again and then finally went kaput. I'll have a rummage through the wiring diagrams.
Cheers
Chris
24th Jun 2024 12:43 pm
SpiderBaby D3 Decade
Member Since: 21 Sep 2007
Location: Liverpool
Posts: 1410
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
Marvellous. I have searched the forum for hours on the EPB issue and not come across this thread. Nice one.
Disco Mikey appears to be the man with the magic touch. A long way from me unfortunately but great to learn from him.
I will get under the car today and start checking the connector at the EPB connector ...or maybe the NSF wheel arch. The thing that is throwing me is that the error code I am getting (C1A00-4b(FB) control module overtemperature ) seems to imply that the motor is working when asked to by the parking switch but is drawing too much current...or the temp sensor is broken.
So approach today will be:
- recheck error codes and EPB live values then
- EPB module connector and wiring and be guided by what I find here.
Cheers
25th Jun 2024 9:03 am
oldandslow1
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
update
So took off nsf splashguard, couldn't find connector and then remembered that this changed from 07 a with no connector...mine is 08 duh. While there, got distracted and serviced the disc brake anyway which needed doing.
Onto EPB connector. There is a white cradle affair around the connector. Does anyone know the mechanism for getting this off? I know I am being thick but I put it down to age and the heat. I have tried for half hour and I cant work it out. Does it need two hands?
Click image to enlarge
26th Jun 2024 12:23 pm
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18561
Click image to enlarge
1. (Pink arrow) press in button, AND
2. (Yellow arrow) swing lever/latch across, which should eject connector from socket06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
26th Jun 2024 12:57 pm
oldandslow1
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
EPB connector removal
Brilliant Martin, thank you. I would never have found that without taking the whole thing out.
Now off to the car to see if I can execute the instruction!
26th Jun 2024 1:47 pm
oldandslow1
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
EPB motor on bench
Well that was fun. It took me 4 days to get the EPB and brake cables out just so that I could have a proper look at it. The bolts were all rusted solid.
Anyway, two questions if someone could please assist:
- what current does the EPB motor draw under no load? I have set it up on the bench and it has so far blown a 15A fuse. I cant tell if its good or not.
- does anyone know of a source for a replacement motor, a Johnson 73677? I cannot see one anywhere.
Many thanks
Chris
3rd Jul 2024 7:08 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14120
Wonder if this would work , alas from France or Germany
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
Nice research Gary, how are you doing?
I did come across the Renault one myself. I'll measure up and see how they compare for physical sizes
Good find on the Blue Chip Autotronic workshop, I never knew they existed.
Also, I have this morning been given another EPB by forum member Motorworks to compare against my current unit to see if there is any difference in the motors.
3rd Jul 2024 8:44 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14120
Good thks , Ur so very welcome and fingers crossed they match as saw the pics with dimensions
Plse let us know how u get on as always wondered if the internals are the same , no probs about the company
Plus getting it back in alot smoother for u
3rd Jul 2024 10:45 am
oldandslow1
Member Since: 07 Oct 2018
Location: Abergavenny
Posts: 63
EPB motor?
This may indeed actually fit. Ignoring mm rounding then the dimensions appear a match. Worth a punt if I get stuck
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