4 yellow lights

Kevrev · Post by **Kevrev** » Wed Mar 31, 2021 9:39 pm

Update on mine it is off side front sensor cleared code lights are off (for now) but will give it a clean and check the ring when I get the chance.

AnilS · Post by **AnilS** » Thu Apr 01, 2021 8:12 am

That's good news. Well done and fingers crossed.

Rucky · Post by **Rucky** » Thu Apr 01, 2021 9:02 am

There are some photos here on an earlier post
viewtopic.php?f=3&t=126755

AnilS · Post by **AnilS** » Wed Apr 07, 2021 6:04 pm

Quick update on mine. After trickle charging the battery, back to full strength, the lights warning lights were still active.

I went to my Indy today for a minor oil filter leak (new gasket fitted) and they ran a diagnostic check. It wasn't any sensor but the ABS Hydro pump. They had a tinker with it and the lights have gone. Ultimately, it may need a new pump but for now, all is well again.

Kevrev · Post by **Kevrev** » Sat Apr 17, 2021 4:19 pm

I need a speed sensor the ring is fine cleaned the sensor but looks like i need a new sensor. Is it main dealer or are ebay ones ok.

Rucky · Post by **Rucky** » Sat Apr 17, 2021 7:06 pm

If you buy pattern - check length before you fit - see above post

Kevrev · Post by **Kevrev** » Thu Apr 29, 2021 12:55 pm

After changing the sensor I'm now down to 3 yellow lights from 4. I've now got traction control, handbrake, and low tyre pressure. Scanning says wheel rotation circuit. Any thoughts anyone.

Mr Tidy · Post by **Mr Tidy** » Thu Apr 29, 2021 7:44 pm

I had those 3 light up a while ago after my battery died.

Took it to Ross at RBM on Tuesday and it was showing a DSC Control Unit fault. I'm pretty sure Ross tweaked the DSC sensor setting (above my level of technologoical competence) and all lights went out. Still out today too.

If it was the Control Unit he said they are about £2K from BMW, but you can send them away for a rebuild for a few hundred (I think the same applies to ABS pumps).

Good luck getting those lights turned off.

Kevrev · Post by **Kevrev** » Fri Apr 30, 2021 10:33 am

Would anyone know the part number for a yaw rate sensor for a 2004 Z4 e85 3.0 manual. Cheers.

Z4mal · Post by **Z4mal** » Mon May 03, 2021 12:25 pm

Try this feed for some info it may help. viewtopic.php?p=1826749#p1826749

meh92 · Post by **meh92** » Thu May 06, 2021 1:19 pm

Had the same thing and it turned out to be my ABS motor/pump. I sent if off to ECU Testing in Derby for a rebuild. Overall, it was a pretty easy job with basic hand tools. ECU had it back to me in a week, and I live in the US!

Kevrev · Post by **Kevrev** » Mon May 10, 2021 6:02 am

All sorted with a new yaw sensor.

enuff_zed · Post by **enuff_zed** » Mon May 10, 2021 7:48 am

Kevrev wrote: ↑Mon May 10, 2021 6:02 am All sorted with a new yaw sensor.

Glad it's sorted, and thanks for coming back to update.

daimler3996 · Post by **daimler3996** » Sat May 15, 2021 7:41 pm

Just encountered the same issue (all four lights) after driving through a massive puddle this afternoon.

Hoping that a wheel/ABS sensor has just got itself wet and will be OK when the car dries out...though that does beg the question of whether it needs looking at to stop it happening again!

Z4-forum.com

Z4-forum.com

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights

4 yellow lights