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At my wits end! Z4 2003 2.5L E85
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At my wits end! Z4 2003 2.5L E85
Hi guys,
Please help! My Z4 is driving me mad! Forgive the pun. I've just brought it out for the summer and it's all gone a bit crazy!
1. Sidelights work ok but switching to main beam switches on the full beam and I can't use the stalk switch to turn them off. The Blue full beam light remains lit on the dash. I can't flash the lights. So it's side lights (no blue light) or full beam (blue light). Nothing in between.
2. ABS, Handbrake Light, Tyre pressure light, traction control light all lit up in orange on the dash. I'm hoping it's all related. I've checked the tyre pressures as i understand it can create havoc if a tyre is badly under-inflated.
3. No response from the key fob. Alarm doesn't activate, doors don't lock/unlock. Fob seems ok. (Relays recently changed on the BCM (GM5) module.
I'm wondering if this bought of madness is all related and a module somewhere has freaked out. It still drives perfectly (but clearly no ABS) so it's such a shame it's being a pain in the arse especially now the weather is finally breaking!
Please please help before I shove it into a lake!
Please help! My Z4 is driving me mad! Forgive the pun. I've just brought it out for the summer and it's all gone a bit crazy!
1. Sidelights work ok but switching to main beam switches on the full beam and I can't use the stalk switch to turn them off. The Blue full beam light remains lit on the dash. I can't flash the lights. So it's side lights (no blue light) or full beam (blue light). Nothing in between.
2. ABS, Handbrake Light, Tyre pressure light, traction control light all lit up in orange on the dash. I'm hoping it's all related. I've checked the tyre pressures as i understand it can create havoc if a tyre is badly under-inflated.
3. No response from the key fob. Alarm doesn't activate, doors don't lock/unlock. Fob seems ok. (Relays recently changed on the BCM (GM5) module.
I'm wondering if this bought of madness is all related and a module somewhere has freaked out. It still drives perfectly (but clearly no ABS) so it's such a shame it's being a pain in the arse especially now the weather is finally breaking!
Please please help before I shove it into a lake!
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At my wits end! Z4 2003 2.5L E85
Always worth maybe checking the battery, a low charge on it can cause all sorts of problems.
Do you have a code reader? That would help you identify issues and get error codes off the car. Maybe someone local might have one, or just buy one off Amazon they are around 50 quid.
Do you have a code reader? That would help you identify issues and get error codes off the car. Maybe someone local might have one, or just buy one off Amazon they are around 50 quid.
Currently Nothing!
Previously
BMW Z4 E85 3.0si
BMW Z4 E86 3.0si
Vauxhall VX220 Turbo
Toyota Celica ST205 GT4
Nissan R33 Skyline GTST
Vauxhall VX220 NA
Nissan 350z
Scirocco 1.4TSI
Previously
BMW Z4 E85 3.0si
BMW Z4 E86 3.0si
Vauxhall VX220 Turbo
Toyota Celica ST205 GT4
Nissan R33 Skyline GTST
Vauxhall VX220 NA
Nissan 350z
Scirocco 1.4TSI
- enuff_zed
- Lifer
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- Location: Attleborough, Norfolk
At my wits end! Z4 2003 2.5L E85
As above, battery health first.
If not that then possibly separate issues.
1. Lights could be a fault in the stalk on the steering column.
2. With all four of those lights on it is most oftern an ABS sensor. A good code reader would tell you which one.
3. If the GM5 has been repaired then most likely a dead battery in the key fob. try leaving it overnight on a toothbrush charger. Failing that you'll need to get the battery replaced.
If not that then possibly separate issues.
1. Lights could be a fault in the stalk on the steering column.
2. With all four of those lights on it is most oftern an ABS sensor. A good code reader would tell you which one.
3. If the GM5 has been repaired then most likely a dead battery in the key fob. try leaving it overnight on a toothbrush charger. Failing that you'll need to get the battery replaced.
- DaveP
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At my wits end! Z4 2003 2.5L E85
It's also possible that the lighting issues are related to a duff Lighting Control Module (the bit behind the switch). I replaced mine recently after some weirdness (no lighting controls, sidelights permanently on), for £30 for a used part and 10min of fitting.
Agree with the poster above, the dash lights you describe point to a duff ABS sensor. £30 on a code reader will tell you which one it is, or a competent garage could do the same in about 5min.
Agree with the poster above, the dash lights you describe point to a duff ABS sensor. £30 on a code reader will tell you which one it is, or a competent garage could do the same in about 5min.
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At my wits end! Z4 2003 2.5L E85
Regarding code reading, see if anyone here is near you (Just skip to the last post )
viewtopic.php?t=144268
viewtopic.php?t=144268
- bigwinn
- Lifer
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At my wits end! Z4 2003 2.5L E85
Where you based?
Issue 1 I’d say is either a slip ring or lcm issue
Issue 2 is abs sensor
3 as above recharge or re link key
Eminently fixable don’t push it in a lake yet
Issue 1 I’d say is either a slip ring or lcm issue
Issue 2 is abs sensor
3 as above recharge or re link key
Eminently fixable don’t push it in a lake yet
If the forum helped you, why not help the forum back. Thats the Z4 way!
EWS Delete PM me
Coding- airbags etc PM me
EWS Delete PM me
Coding- airbags etc PM me
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At my wits end! Z4 2003 2.5L E85
I don't think I could launch it into a lake as I love the thing when it's behaving.
I've tried charging the key fob on a toothbrush charger and re-linking the key but it is completely unresponsive. A bit more information about this... It was possible to unlock the driver's side door with the key, get in, close the door, insert the key in the ignition and turn on, then press the door unlock button until the buttons popped up then open the passenger's side. Now though, that doesn't work and it isn't even possible to open the passenger's side at all! I don't know if this sheds any more light on things?
What is a slip ring? And the LCM is behind the rotary switch for the lights?
Thank you so much guys! I really appreciate your comments.
I've tried charging the key fob on a toothbrush charger and re-linking the key but it is completely unresponsive. A bit more information about this... It was possible to unlock the driver's side door with the key, get in, close the door, insert the key in the ignition and turn on, then press the door unlock button until the buttons popped up then open the passenger's side. Now though, that doesn't work and it isn't even possible to open the passenger's side at all! I don't know if this sheds any more light on things?
What is a slip ring? And the LCM is behind the rotary switch for the lights?
Thank you so much guys! I really appreciate your comments.
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- Senior Member
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At my wits end! Z4 2003 2.5L E85
If it was working before hibernation then I doubt anything has gone wrong just sitting there. My bet would be the battery.
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- Lifer
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- Joined: Tue Sep 29, 2020 10:37 pm
- Location: North Hampshire
At my wits end! Z4 2003 2.5L E85
My guess is poor battery health too. First thing, charge it up then clear the codes. If you are not close to anyone with a code reader, then a Creator C310+ is a great investment at c.£50.
Slip ring is the part of the steering column that the indicator stalks are attached to, also known as clock spring.
LCM is indeed behind the light switch.
Hope you get it sorted soon.
2003 Maldives Blue 3.0i auto
Previously: Maldives Blue 2.5i manual (its back!) and another, and a Monaco Blue 3.0Si coupe
Previously: Maldives Blue 2.5i manual (its back!) and another, and a Monaco Blue 3.0Si coupe
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At my wits end! Z4 2003 2.5L E85
Fit a good battery (new) first action, second check for evidence of rodents, mice, rats, squirrels, cancel the codes and see what comes back
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- Lifer
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At my wits end! Z4 2003 2.5L E85
That is a good shout IMO. Those little feckers can nibble through insulation so easily and create 'dead shorts' on a myriad of sensitive cabling.deltasierra wrote: ↑Tue Mar 26, 2024 7:49 pm second check for evidence of rodents, mice, rats, squirrels, cancel the codes and see what comes back
A good place to start to see if you have had visitors is anything with foam around it. They like that cos it's warm, easy to rip and good to make nests with.
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
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At my wits end! Z4 2003 2.5L E85
If issue 2 isn’t an ABS sensor, if I recall correctly it could be the yaw sensor that lives underneath the carpet in front of the passenger seat. Mine was the same unit as used in Mini’s so was £25 from eBay.
But as above code read first.
Good luck.
But as above code read first.
Good luck.
- enuff_zed
- Lifer
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- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
At my wits end! Z4 2003 2.5L E85
The yaw sensor doesn’t usually put the tyre light on, though of course that could be a separate issue of a tyre being low
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At my wits end! Z4 2003 2.5L E85
After a good amount of digging through the fault codes, the abs sensor on the front passenger side is kaput so that's an easy fix.
Not much illuminated by trying to find a problem with the lights (please forgive the pun??!). I want to replace the LCM as it's easy and cheap enough to eliminate but as usual, I have a question. Does the part number of the LCM have to match exactly? I realise I can't replace my 'non-automatic lights' version with one that has automatic lights but what else might I have to loo out for. Nothing I can't find for sale has a part number like mine but the units look identical.
To add to my woes, a could spring snapped a couple of days ago taking the top mount out too. A new shock, mount and spring on their way.
Not much illuminated by trying to find a problem with the lights (please forgive the pun??!). I want to replace the LCM as it's easy and cheap enough to eliminate but as usual, I have a question. Does the part number of the LCM have to match exactly? I realise I can't replace my 'non-automatic lights' version with one that has automatic lights but what else might I have to loo out for. Nothing I can't find for sale has a part number like mine but the units look identical.
To add to my woes, a could spring snapped a couple of days ago taking the top mount out too. A new shock, mount and spring on their way.