2004 4.8iS 4x4 light issue (the saga continues)

[BimmerE38E53]

So....I posted previously about my 4x4 light issue. It came on the same time as the SLS Inactive warning. Replaced the EHC and recoded all good there now and been for about 3 months. However the 4x4 light has remained on.

I have put a new gear inside the transfer case actuator. No luck. Replaced the Yaw (acceleration sensor) today. No luck. Below is the pic of the error I'm getting, but I'm not having luck running down the issue.

I also have a random idle fluctuation sitting at a red light. Not enough that the tach moves but I do feel it in the steering wheel. Just a slight up and down. Could my 4x4 light be related to a voltage regulator issue? If so how do I check?

Below is a picture of the error I'm getting.

[BimmerE38E53]

Is there any reset procedure once the year sensor is replaced? Just checking to see if I missed something?

[SlickGT1]

See my link in sig. Unlock your OBC. Run fiat test for voltage. Test 9 I believe. And monitor voltage with accessories on.

I actually had crazy errors because my alternator went overvoltage.

[BimmerE38E53]

Originally Posted by SlickGT1

See my link in sig. Unlock your OBC. Run fiat test for voltage. Test 9 I believe. And monitor voltage with accessories on.

I actually had crazy errors because my alternator went overvoltage.

Will do. Thank you.

[BimmerE38E53]

So....it was the yaw sensor. Fixed my headlight issues this morning backed it out turned left just a bit and the 4x4 light went out! First time in 6 months with no lights on the dash!!! Feels so good!!!! Thanks for all the info.

[jopecasa]

Glad you've sorted your issue!

Go out and enjoy the SAV!

[BimmerE38E53]

Originally Posted by jopecasa

Glad you've sorted your issue!



Go out and enjoy the SAV!

I definitely will!!