Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
Hi guys
Weird problem the indicators on the outside of the car all work fine
The relay no longer clicks though and the indicator signs on the dash don't light up when I'm indicating or the hazards are on
Everything else electrical works including hrw so it's not in transport mode.
Anyone any ideas? Thanks Jamie
Edit.. Fixed. Airbag module was wet through
Weird problem the indicators on the outside of the car all work fine
The relay no longer clicks though and the indicator signs on the dash don't light up when I'm indicating or the hazards are on
Everything else electrical works including hrw so it's not in transport mode.
Anyone any ideas? Thanks Jamie
Edit.. Fixed. Airbag module was wet through
Last edited by jamie_z4 on Wed Apr 11, 2018 6:53 am, edited 2 times in total.
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
Indicator relay not clicking and dash light not working
cars having all sorts of electrical issues now.
electric windows don't work
roof doesn't work
full beam indicator lamp doesn't work
I left the roof down last week and doing some research - points to the airbag ecu in the centre consol behind the handbrake.
anyone have any experience replacing these ? If so did they need coding?
electric windows don't work
roof doesn't work
full beam indicator lamp doesn't work
I left the roof down last week and doing some research - points to the airbag ecu in the centre consol behind the handbrake.
anyone have any experience replacing these ? If so did they need coding?
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
-
- Lifer
- Posts: 5277
- Joined: Wed Feb 19, 2014 3:01 pm
- Location: NW London
electrical gremlins - please help!! Airbag ECU?
Are you sure your battery is ok?
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
electrical gremlins - please help!! Airbag ECU?
yeah it is new. all issues still present with a mains battery charger connected too.
had the Gm5 module out - replaced with one from another car
removed LCM / headunit checked for wiring breaks,
removed main fusebox and checked all connections / earths - all good.
had car on a 'launch' diagnostic machine - car is not seeing half the ECUs - car thinks there is no roof module/immobiliser/window wiper module etc
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
-
- Lifer
- Posts: 5277
- Joined: Wed Feb 19, 2014 3:01 pm
- Location: NW London
electrical gremlins - please help!! Airbag ECU?
Why does something about the instrument cluster ring a bell? Does everything go through that?
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
electrical gremlins - please help!! Airbag ECU?
Battery is fine. I had it on a BSU so voltage remained at 14v throughout the whole time.
GM5 appears OK, getting good 12v and ground inputs. However in diagnostic only 3 of the 20 or so modules are communicating on the can bus network.
Think this is gonna take a little bit of thought and investigating..
Mike
GM5 appears OK, getting good 12v and ground inputs. However in diagnostic only 3 of the 20 or so modules are communicating on the can bus network.
Think this is gonna take a little bit of thought and investigating..
Mike
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
electrical gremlins - please help!! Airbag ECU?
There appears to be some kind of short between the lcm and the binnacle. When the ignition is turned off, the binnacle backlights stay on, even with key out. Disconnecting the lcm turns them off.Scooba_Steve wrote: ↑Tue Apr 10, 2018 10:41 pm Why does something about the instrument cluster ring a bell? Does everything go through that?
Very weird. I'm thinking either a faulty module cluttering up the can bus with rogue data, a bit like my faulty gap-tech, a poor ground causing the system to track back through the binnacle to a 0v and illuminating it in the process, or a faulty lcm...
Tricky one this. But I will get to the bottom of it.
Mike
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
electrical gremlins - please help!! Airbag ECU?
Fixed it. Was the airbag module behind the handbrake that had got piss wet through. First thing I did after gettin in off nights is strip the interior to bits (and break everything in the process )
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
- ph001
- Lifer
- Posts: 3870
- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
Well found! How does water make its way into that module just out of interest??
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
- ph001
- Lifer
- Posts: 3870
- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
As Mike says says, my stupid fault!
It is a bit of a s**t place though, it's a big safety device located in a convertible sports car, just between the seats where water pools in the unfortunate event you accidently leave the roof down....
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
-
- Newbie
- Posts: 19
- Joined: Tue Apr 10, 2018 3:17 pm
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
Having the same issues!
How do you remove the airbag module? And did you replace it?
Thanks
How do you remove the airbag module? And did you replace it?
Thanks
-
- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
Hi, you have to remove the whole centre console, there is a guide on here and it involves removing lots of screws etc but it's behind the handbrake under the plastic trim. It's only held in with one bolt though so just unplug it first to see if your issues go away as your removing it from the canbus network then and it will take away the gremlins theoretically like It did with mine.
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
-
- Newbie
- Posts: 19
- Joined: Tue Apr 10, 2018 3:17 pm
electrical gremlins - please help!! Airbag Ecu? Edit... Fixed
Cheer's Jamie, just seen this. New to this forum stuff and keep missing reply's and responding on wrong thread's!
Managed to get it all stripped out with only a couple of rusty screwdrivers and a plastic shoe horn, absolute nightmare for a novice like me..
Not removed the actual airbag unit as yet, need to get an 8mm socket as I thought the nuts were meant to be 10mm??
Anyway, removed the module wiring and started the car. Radio comes on and window's operable once again!!
Was gonna get a used module off eBay, but can't find one with the same part number?
Managed to get it all stripped out with only a couple of rusty screwdrivers and a plastic shoe horn, absolute nightmare for a novice like me..
Not removed the actual airbag unit as yet, need to get an 8mm socket as I thought the nuts were meant to be 10mm??
Anyway, removed the module wiring and started the car. Radio comes on and window's operable once again!!
Was gonna get a used module off eBay, but can't find one with the same part number?