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M_Power_Mechanic50 | Posts: 4091 | Loc: CA | Date: 05-16-2026, 04:55 AM

I took it to the dealer and they said the iDrive 8.5 system but they couldn't replicate the issue. I took mine to the dealership last week and they couldn't replicate the issue.


Current: G60 540i | Past: F30 335i, E46 M3
Canyon_Enthusiast92 | Posts: 3970 | Loc: UK | Date: 06-29-2026, 02:25 PM

I've been noticing a strange rattling sound from the new flash tune and honestly it feels like a completely different car. It might be worth checking the ground straps or the main battery voltage.

Track_Pilot55 | Posts: 2294 | Loc: CA | Date: 06-21-2026, 07:35 AM

Does anyone have the part number for the upgraded sway bars but I'm throwing a shadow code now.