Dash warning following a restart

[East Coast Z4]

My wife and I are new to BMW's and acquired a low mileage 2006 Z4 3.0i with only 31k miles. I've already had to replace a couple camshaft position sensors and I expect to replace a few more sensors on a nearly 20 year old vehicle. I'm puzzled on the latest dash light issue, from a cold start you can drive the car and no issues. If you stop, shut the car down and restart within 10 minutes or so we get the following dash lights. Just seems odd it's always following a restart and doesn't occur on the first drive of the day, any ideas or suggestions?

 

[bigwinn]

I’d say get your codes scanned to be sure

But looks like an ABS DTC issue

 

[TIMMOS29]

First, go to eBay and buy an OBD scanner that connects to your phone via Bluetooth. You can also use a dongle if you prefer. Keep the scanner in the car and then connect it to your phone. Once connected, tell us the codes. Here’s a link to what you need:

https://www.ebay.co.uk/itm/265560933280?_skw=obd2+fault+code+reader+elm&itmmeta=01JVYW4N3ZB89YYP83WMR1PVXP&hash=item3dd4aa43a0:g:7~cAAOSwDhdiFBya&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1f6M3qLF6mhX3%2FICo6abHGG8vyz5bljhUDg%2FKl%2F1PUTkPtE0HWenDRa9ZhAFTDzv7XiqW16SwZe55T9SMTGnXk5w9dE6E0riTFr5HaY3D7dsZg3aXRuyQTaR9T6oJw67SV48FcWpKKadOVGHbWmmcbaA5GfipYr2XjuxOAhYdJPHd9tnPu0i3%2BnLzXt4jPKNNgwFX%2FqlLKgmZLmzCa3y1EebdYh14Sjg3j7Eij8injsxd5c5DuzHvGTI7aftJYs6dTCszXTmpL%2F%2BA4AAueokm8P2tgiOk9pRg1x4j3buf5RVw%3D%3D%7Ctkp%3ABFBMntKS3N9l

 

[East Coast Z4]

I have OBD scanner and just downloaded the following codes:

ABS (Anti-Lock Braking System - DSC)
5E34 DSC: DSC Sensor Longitudinal Acceleration, Plausibility
5E30 DSC: DSC Sensor Lateral Acceleration, Plausibility

LEW (Steering-Angle Sensor)
0B LWS:Sensor/Vehicle Allocation Incorrect or Not Available


Kinda surprised on these codes as the lights are intermittent and the car seems to drive just fine. Any thoughts on where to start?

 

[enuff_zed]

I have OBD scanner and just downloaded the following codes:

ABS (Anti-Lock Braking System - DSC)
5E34 DSC: DSC Sensor Longitudinal Acceleration, Plausibility
5E30 DSC: DSC Sensor Lateral Acceleration, Plausibility

LEW (Steering-Angle Sensor)
0B LWS:Sensor/Vehicle Allocation Incorrect or Not Available


Kinda surprised on these codes as the lights are intermittent and the car seems to drive just fine. Any thoughts on where to start?

I’d say possibly the yaw sensor under the right side seat. It’s a basic accelerometer.

 

[East Coast Z4]

I have OBD scanner and just downloaded the following codes:

ABS (Anti-Lock Braking System - DSC)
5E34 DSC: DSC Sensor Longitudinal Acceleration, Plausibility
5E30 DSC: DSC Sensor Lateral Acceleration, Plausibility

LEW (Steering-Angle Sensor)
0B LWS:Sensor/Vehicle Allocation Incorrect or Not Available


Kinda surprised on these codes as the lights are intermittent and the car seems to drive just fine. Any thoughts on where to start?

I’d say possibly the yaw sensor under the right side seat. It’s a basic accelerometer.

Thanks for the reply, are you saying that might resolve all three codes or just the DSC issue?

 

[enuff_zed]

I have OBD scanner and just downloaded the following codes:

ABS (Anti-Lock Braking System - DSC)
5E34 DSC: DSC Sensor Longitudinal Acceleration, Plausibility
5E30 DSC: DSC Sensor Lateral Acceleration, Plausibility

LEW (Steering-Angle Sensor)
0B LWS:Sensor/Vehicle Allocation Incorrect or Not Available


Kinda surprised on these codes as the lights are intermittent and the car seems to drive just fine. Any thoughts on where to start?

I’d say possibly the yaw sensor under the right side seat. It’s a basic accelerometer.

Thanks for the reply, are you saying that might resolve all three codes or just the DSC issue?

The dsc codes. The other one I don’t think is a huge issue. Possibly had a replacement angle sensor at some point but if it’s been calibrated that’s fine

 

[enuff_zed]

I would say though that the codes don’t seem to correlate with the lights. They codes say accelerometer but that should light the DSC light not the Brake one

 

[TIMMOS29]

Have you cleared these codes and gone and driven the car?

 

[East Coast Z4]

Yes, so far they keep coming back. Oddly enough only appear on a warm restart, if the car sits for a while or overnight I don't get the dash lights. Very frustrating.....

 

[East Coast Z4]

Update:

Checked tires, reset TPMS. Calibrated steering sensor, cleared the codes and went for a drive. No issues, shut off car, immediately restarted and had DSC faults but no other codes this time.

Went for another drive and had my wife scan the OBD while we were driving, no faults. Returned home and shut off car, immediately restarted and no faults.

Whatever is going on is very intermittent, on the bright side the steering sensor and seemingly TPMS fault didn't return so I'll consider that a small win. Any ideas what could cause the intermittent DSC fault?