Continuous Limp Mode Occurance

[JL947]

For reasons unbeknownst to me, my 08 E90 6spd keeps hitting limp mode every other drive. Though a lot less frequent when the weather is cooler. Thankfully, Carly shows nothin more than 02 sensors and TA's. With a simple clearing, I can turn the vehicle off and back on then everything goes to normal.

But here's the problem. TA's have been replaced (I've got 5 rebuilt ones that have gone into the car to no avail), replaced all 02 sensors, exhaust gaskets, spark plugs, fuel tank breather valve (doubt it is related), and the issue still arrises.

From what I've been told, a simple exhaust leak can cause the car to go into limp mode. Some even have said their E90 M3 also had the same issue with an Alpine burble tune, and the limp mode disappeared without the burble option.

Just looking for advice on what else I can check/replace to help minimize the limp mode occurrence.

Thanks ladies & gents!

Note: It needs to be known I'm not point fingers at Alex, this is simply an observation by another owner which I am curious to see if anyone else has experienced. Alex has told me himself the motor needs to be as healthy as possible to run the burble tune, so I am aware that my motor may be the culprit rather than him.

[walt mckenna]

Originally Posted by JL947

For reasons unbeknownst to me, my 08 E90 6spd keeps hitting limp mode every other drive. Though a lot less frequent when the weather is cooler. Thankfully, Carly shows nothin more than 02 sensors and TA's. With a simple clearing, I can turn the vehicle off and back on then everything goes to normal.

But here's the problem. TA's have been replaced (I've got 5 rebuilt ones that have gone into the car to no avail), replaced all 02 sensors, exhaust gaskets, spark plugs, fuel tank breather valve (doubt it is related), and the issue still arrises.

From what I've been told, a simple exhaust leak can cause the car to go into limp mode. Some even have said their E90 M3 also had the same issue with an Alpine burble tune, and the limp mode disappeared without the burble option.

Just looking for advice on what else I can check/replace to help minimize the limp mode occurrence.

Thanks ladies & gents!

Note: It needs to be known I'm not point fingers at Alex, this is simply an observation by another owner which I am curious to see if anyone else has experienced. Alex has told me himself the motor needs to be as healthy as possible to run the burble tune, so I am aware that my motor may be the culprit rather than him.

This is a long shot but cost nothing to try. My 11 E92 M3 with DCT would go into limp mode on first start about one out of ten starts. After much trial and error, the following startup procedure fixed the problem.....Insert key fob in dash, press start without pressing pedal, press pedal and then press start again..... As I said in a previous post, this cured the problem but not the root cause.

[JL947]

Originally Posted by walt mckenna

This is a long shot but cost nothing to try. My 11 E92 M3 with DCT would go into limp mode on first start about one out of ten starts. After much trial and error, the following startup procedure fixed the problem.....Insert key fob in dash, press start without pressing pedal, press pedal and then press start again..... As I said in a previous post, this cured the problem but not the root cause.

I will try this for a while and see if it works on my car. I have heard another member performing this start up sequence for the same issue as well.

Thanks