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Attempted 3.7.0 update (failed) and now car won't lock or unlock.

2.5K views 11 replies 10 participants last post by  RechargeHard  
Is this a known issue with a known solution? I've tried rebooting the infotainment system. I have not tried a factory reset but will if that's a known way to fix this issue. Last resort is I drive it to the dealer.
You could try soft-rebooting the TCAM (module that controls all comms/modem/keyfobs/GPS/etc): Hold the FRONT DEFROST button down for 20 seconds, until red SOS light above starts flashing, then wait until flashing stops.

Failing that, you could try a HARD RESET of the TCAM (procedure here: (10) TCAM Reset Process for the C40 - "SOS / eCall Service required" error recovery | Volvo XC40 Forum)

Failing that, drive to dealer.