Cluster of warning lights on

[colb]

Had a look on Realoem parts site for BoxClever's 3.0l car, as mentioned above the steering angle sensor is located at the bottom of the column not behind the steering wheel as some of the other models have it. The Pelican Parts How to explains all https://www.pelicanparts.com/techarticles/BMW_Z4M/103-INTERIOR-Steering_Column_Replacement/103-INTERIOR-Steering_Column_Replacement.htm
We scanned the car and it came up with steering angle signal implausable, checked out the wheel speed sensors by looking at live data whilst it was driven around and all 4 were registering ok. Also looked at the brake sensors on the master cylinder, both were working and preety much equal when the brakes were applied. Having ruled out those componants that leaves the steering angle sensor as being the likely culprit. The TPMS light is also lit and that won't respond to a reset, dare say its locked out due to the steering angle sensor going bad.
Got to pull the column out to replace it, hence the long labour time quoted in the Pelican Parts How to (5 Hours)
The lights will never reset until the sensor is replaced and the codes cleared followed by a TPMS reset.

 

[bigwinn]

Had a look on Realoem parts site for BoxClever's 3.0l car, as mentioned above the steering angle sensor is located at the bottom of the column not behind the steering wheel as some of the other models have it. The Pelican Parts How to explains all https://www.pelicanparts.com/techarticles/BMW_Z4M/103-INTERIOR-Steering_Column_Replacement/103-INTERIOR-Steering_Column_Replacement.htm
We scanned the car and it came up with steering angle signal implausable, checked out the wheel speed sensors by looking at live data whilst it was driven around and all 4 were registering ok. Also looked at the brake sensors on the master cylinder, both were working and preety much equal when the brakes were applied. Having ruled out those componants that leaves the steering angle sensor as being the likely culprit. The TPMS light is also lit and that won't respond to a reset, dare say its locked out due to the steering angle sensor going bad.
Got to pull the column out to replace it, hence the long labour time quoted in the Pelican Parts How to (5 Hours)
The lights will never reset until the sensor is replaced and the codes cleared followed by a TPMS reset.

Col-

It’s worth trying first:

Opening the SAS in situ to bend the contact prongs to a better position

Use toolset32 to do the edibas reset with inpa to realign the steering values

Just my fourpenneth but that’s a lot easier than removing the column to replace the SAS

 

[colb]

Maybe worth a try but its in an awful place to do anything with it in situ. Its held on the column by the lower bush with a clip, not at all sure you wouldn get it apart to adjust the pickup prongs.

 

[bigwinn]

Maybe worth a try but its in an awful place to do anything with it in situ. Its held on the column by the lower bush with a clip, not at all sure you wouldn get it apart to adjust the pickup prongs.

Agreed I still have scars

 

[BoxClever]

Thanks for all your input, guys. As this is becoming a bit of a pain I think I’m going to live with the 3 lights for now unless someone fancies having a go at it for me? Colin, I don’t expect you to do this but if alcohol and money would persuade you then I’m fine with that!

 

[NS66]

Have you tried checking your tyre pressures? might be coincidental?
I had those lights come up recently when out driving - pulled into a filling station and one tyre was 2psi down - pumped up - reset the TPM and all went out after drive reset. Just a thought?

 

[colb]

I am a fair distance away from you to take this job on, not done one yet so it would be a steep learning curve. Since you are in Lincoln have a chat with t-tony over on the zroadster.org forum, he runs the members Zedshed where they fettle each others cars around Lincoln area and wider. Retired proffessional mechanic with great knowledge of all thing Z. I wouldn't try adjusting those prongs just bite the bullit and replace the unit.

 

[BoxClever]

I am a fair distance away from you to take this job on, not done one yet so it would be a steep learning curve. Since you are in Lincoln have a chat with t-tony over on the zroadster.org forum, he runs the members Zedshed where they fettle each others cars around Lincoln area and wider. Retired proffessional mechanic with great knowledge of all thing Z. I wouldn't try adjusting those prongs just bite the bullit and replace the unit.

I'm in Bristol, Colin, but no worries, appreciate your advice so far

 

[colb]

Sorry confused you with bigwinn in the thread

 

[[email protected]]

Right, this is what came out of my iCarsoft diagnostics tool. I finally figured out how to use it!
5E38 Rotation rate sensor. It that the module under the seat does anyone know?

 

[colb]

Google search on that code points to the yaw sensor under the seat as opposed to wheel speed sensors.

 

[[email protected]]

Nice one, all pointing to that.
Cheers

 

[Rucky]

I dont believe this is the ABS/Wheel speed sensors as the ABS light to the left is NOT lit.
If you have a look at this article I wrote way back it explains this specific warning - which is more likely a steering angle fault,
https://z4-forum.com/forum/viewtopic.php?t=121145

You say you deleted the codes but you neglected to say what they were? Reading the codes is the only way to determine where the fault lies.
Happy to discuss if you wish.

 

[Rucky]

Oh and FORZA GB in Caldicot replaced the SAS for £70-80 butI supplied the SAS £240 ouch

 

[[email protected]]

This one

 

[enuff_zed]

If it helps, on my Autophix 5900 I can watch live data from the SAS. It shows the amount of degrees that the wheel is turned either side of straight ahead. It only measures the angle, not the rate at which the angle changes.
Therefore, I would start at the yaw sensor, under the drivers seat.
If your car is a pre-facelift this will be a lot cheaper than the facelift version.
You can probably get away with unbolting the seat and tilting it over for access, which saves disturbing the electrical plug on the seat.
Check it is all clean and dry under there, as the biggest killer of these things is damp from a leaking door membrane.

 

[Rucky]

Not sure if you are in Cirencester or Bristol but call Forza and ask them for a quote. They charge£40 for a diagnostic which is why I bought icarsoft i910 and Inpa. But very reasonable for a sas change which was completed in a morning, much less than 5hours.

 

[[email protected]]

I don't believe it, as the saying goes! I think Ive cured the wet floor under the drivers door. New door seal, fixed door membrane, cleared drains behind the seats, cleared bulk head crap. Treated all seals, now theres water in the battery well coming from the right hand side of the boot.
Is it the rear light, filler cap ??
All ideas are always welcome as usual. (I'm losing the will to live now)