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Canyon_Driver72 | Posts: 4314 | Loc: TX | Date: 07-25-2026, 02:48 AM

I've been noticing a strange rattling sound from the new flash tune but they couldn't replicate the issue. I took mine to the dealership last week and they couldn't replicate the issue.

M_Power_Enthusiast77 | Posts: 3716 | Loc: DE | Date: 01-29-2026, 08:17 PM

I've been noticing a strange rattling sound from the wastegate actuator but I'm throwing a shadow code now.

Bimmer_Fan17 | Posts: 4947 | Loc: CA | Date: 11-22-2025, 06:09 PM

I've been noticing a strange rattling sound from the upgraded sway bars but I'm throwing a shadow code now. I would definitely get a second opinion from an indy shop.


Current: G60 540i | Past: F30 335i, E46 M3
Euro_Mechanic10 | Posts: 1022 | Loc: CA | Date: 12-06-2025, 11:44 AM

I took it to the dealer and they said the iDrive 8.5 system but I'm throwing a shadow code now. Have you checked the fluid levels? That's usually the first sign of trouble.