[Tonyt915]

I have a 2014 328D with a Mission Performance Stage 2 tune. Got into an accident last month that messed up the suspension."Bent the front and rear rim on the driver side, bent the front strut, front wheel bearing and hub replaced" The collision center is owned by the BMW dealership, and they fixed the the damage but the steering rack started giving me issues after I picked it up so I scheduled to bring it back so they could replace the rack. Well in-between picking it up and bringing it back to them I had it tuned and removed all the modules for the diesel emissions."DEF tank, NOX modules, SCR, DPF, and EGR turned off" Brought it back this morning, and they swapped out the rack this morning but are having issues programming it. They said the traction control is turned off and it will not let them program the steering rack because of the program they are using talks to all the computers in the car. Talked to Alex at MP and he said the tune has nothing to do with the computer for the steering rack, that it's something they are doing wrong. Also checked with a local indy shop and explained the situation. They weren't 100% but seemed to side with MP about the tune not affecting the steering rack. Was curious if anyone else on here has a tune and had issues with BMW being able to code new parts? Seems like the techs are using the tune as an excuse for not being able to code the car according to MP. Update collision center is using ISTA so not their fault, the tune is causing the problem.

[Wgosma]

somewhat related (?),read here: https://f30.bimmerpost.com/forums/sh....php?t=1566880

[IK6SPEED]

Originally Posted by Tonyt915

I have a 2014 328D with a Mission Performance Stage 2 tune. Got into an accident last month that messed up the suspension. The collision center is owned by the BMW dealership, and they fixed the the damage but the steering rack started giving me issues after I picked it up so I scheduled to bring it back. Well in-between picking it up and bringing it back to them I had it tuned and removed all the modules for the diesel emissions. Brought it back this morning, and they swapped out the rack this morning but are having issues programming it. They said the traction control is turned off and it will not let them program the steering rack. Talked to MP and Alex said the tune has nothing to do with the computer for the steering rack. Also checked with a local indy shop and explained the situation. They weren't 100% but seemed to side with MP about the tune not affecting the steering rack. Was curious if anyone else on here has a tune and had issues with BMW being able to code new parts? Seems like the techs are using the tune as an excuse for incompetence but I could be wrong.

A lot of words in that post but not a lot of specific details.

This I know is fact.

BMW Dealers connect cars to ISTA. It then looks at what’s suppose to be be on the vehicle from the BMW Database. If any of those ECUs etc do not match up or report being in a state that isn’t normal, it throws an error and stops the process.

For example, you can put a F80 shifter in a F30 and it will function. You can also put a normal 5 series shifter in a F30 (won’t physically fit but it will function). However, once ISTA polls those ECUs and realizes they are not the right ones, it will terminate the procedure with an error report.

Clearly, something MP did (or you pulling off parts) is throwing errors in ISTA and is not letting the car be programmed by ISTA. The ECUs can usually be programmed individually with esys, but Dealers do not use that. ISTA takes all the steps and does it automatically.

This is a known issue when you start modifying a car.

Originally Posted by Wgosma

somewhat related, read here: https://f30.bimmerpost.com/forums/sh....php?t=1566880

Totally different.

[IAmATeaf]

If the tune has coded extra stuff that isn’t part of your vin then that might explain why they are having difficulties. When I had my steering rack replaced the dealer rang me to say they’d need to keep the car for an extra day as they needed to update the car in order to get the new rack working. If the bmw update process uses the vin then maybe anything unexpected causes an issue?

The above are just just my thoughts and not fact by the way.

[jmg]

Originally Posted by Tonyt915

Well in-between picking it up and bringing it back to them I had it tuned and removed all the modules for the diesel emissions.

Originally Posted by Tonyt915

Talked to MP and Alex said the tune has nothing to do with the computer for the steering rack.

The tune is not OEM so it will be flagged and the dealer will not be able to reprogram the steering rack.

Originally Posted by IK6SPEED

BMW Dealers connect cars to ISTA. It then looks at what’s suppose to be be on the vehicle from the BMW Database. If any of those ECUs etc do not match up, it throws and error and stops the process.

100% correct. I would reflash to stock and see if the dealer can re-program.

[Tonyt915]

Originally Posted by IK6SPEED

A lot of words in that post but not a lot of specific details.

This I know is fact.

BMW Dealers connect cars to ISTA. It then looks at what’s suppose to be be on the vehicle from the BMW Database. If any of those ECUs etc do not match up or report being in a state that isn’t normal, it throws an error and stops the process.

For example, you can put a F80 shifter in a F30 and it will function. You can also put a normal 5 series shifter in a F30 (won’t physically fit but it will function). However, once ISTA polls those ECUs and realizes they are not the right ones, it will terminate the procedure with an error report.

Clearly, something MP did (or you pulling off parts) is throwing errors in ISTA and is not letting the car be programmed by ISTA. The ECUs can usually be programmed individually with esys, but Dealers do not use that. ISTA takes all the steps and does it automatically.

This is a known issue when you start modifying a car.



Totally different.

Thanks for the information. Talked to the dealer and they are using ISTA, called independent shop that uses MP as their tuning company and was told they are also partners with the dealership so the car is being transferred to them.

[Tonyt915]

Forgot to follow up, the collision center brought the car to the BMW dealer next door and they got the steering rack programmed. The chassis stabilization warning hasn't come on since

[Wgosma]

Originally Posted by Tonyt915

Forgot to follow up, the collision center brought the car to the BMW dealer next door and they got the steering rack programmed. The chassis stabilization warning hasn't come on since

Great to hear-👍