DaSerb wrote: ↑
Mon Jan 11, 2021 9:57 pm
Not sure what is the difference but going back to 2025 worked.
The 2032's are thicker by 0.7mm and sometimes can distort the contact fingers to the point where they lose contact. That varies from fob to fob. On most fobs a 2032 won't cause issues, but on some it will.
Working in the slot doesn't tell you anything about the battery, because the doghouse uses a separate RFID signal that doesn't need the battery to function. It's the emergency start system, designed to work even if the fob has been drowned. You can actually stick the bare circuit board in the slot, without housing or battery, and the car will start up fine.