I just had failed battery preconditioning update. The dealer installed wrong update.
BUT I am not sure BMS update will cause sensor issue…..
I’ve heard that faulty ICCU issues but not sure it’s from BMS update.

Actually, ICCU is the reason for extended warranty so I don’t need to worry about anything for 10 years/120k miles. I should get the extended warranty before 10k miles…..

 

No problems following the preconditioning update two weeks ago on our I5.

 

I've got an extended warranty too. But this should be covered anyway.

Have you turned on the battery pre conditioning "switch" and entered a location for a charging station. I had the update for 3 weeks and finally used it two days ago. That's when the problem began. My advice would be not to do it. The dealer mentioned that what happened to me happened to another customer who had done the same update

 

I had the same code C164286. With previous faults, I would turn off the car, restart it and all would be well. With this code and associated faults of sensors, lane keeping assist and many others, the malfunction continued. I have a BLUETOOTH DTC reader which I used to connect to ABRP “route planner” which enhanced recharge planning on long trips. With it I connected to the car scanner app and without putting much thought to it I asked it to reset the codes. All 51 “sections” in it. When done, the warnings, faults, and malfunctions had all been cleared and have been since then (a week worth of driving). I was almost ready to head to the dealership but this solved THIS particular issue with DTC C164286. My 2 cents worth for future planning.

 

Thanks for the supporting info. I haven't had any errors since back in February when I reported it here. the error laste about 4 days and then disappeared and never came back. I am currently awaiting the update that will fix the sluggish Eco mode from the original battery preconditioning update. The dealer is due to install it on June 12.