Page 1 of 1

i3 REX (2015) locking and unlocking by itself while driving

Posted: Wed Feb 12, 2020 11:58 pm
by rebeeston
Recently my 2015 i3 REX started unlocking and relocking by itself while driving. Seems to happen primarily during low speed cornering. Also, the right passenger rear door sensor will intermittently say the door is open (when it's not) also when cornering. The sensor will show the door closed after straightening out.

Vehicle is a CPO so I'll be taking it to the dealer for diagnosis.

Anyone else come across this? Searching this forum did not bring up anything.

Thanks

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Thu Feb 13, 2020 4:51 am
by vreihen
Is the key fob in your pocket?????

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Thu Feb 13, 2020 9:38 am
by Obioban
Almost certainly your key in your pocket. It's dumb-- never experienced this behavior in any other comfort access car. I've even set off the alarm via the fob while driving.

The buttons on the key should do nothing while the car is on. I don't know why they thought anything else made sense.

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Thu Feb 13, 2020 1:36 pm
by rebeeston
I thought it could be that, and while I do like tight pants (TMI), it's not the case. Drove to work today with the key fob on the passenger seat and the issue recurred. Unlocking and then relocking without any driver input. Going over (speed) bumps or around corners seems to trigger it and also causes the rear passenger door sensor to trip, which the keyfob would not cause. Next thing to try will be taking the battery out of the keyfob or try driving using the other keyfob.

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Thu Feb 13, 2020 2:57 pm
by vreihen
Frayed wires in the right door harness would be my next guess. Do they route through the frunk where they may be vulnerable to rodent damage?????

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Thu Feb 13, 2020 4:43 pm
by eNate
Obioban wrote:
Thu Feb 13, 2020 9:38 am

The buttons on the key should do nothing while the car is on. I don't know why they thought anything else made sense.

Holy Moly! That's crazy... I've never had a car that responded to remote commands while the ignition is on. Huh!

rebeeston wrote:
Next thing to try will be taking the battery out of the keyfob or try driving using the other keyfob.
I suppose that couldn't hurt to try, but I'd plan to go straight to unplugging the lock / window controls at each door if you're going to begin diagnosing. But you said you have CPO coverage, so I presume you're headed to the dealer next?

I would suppose that if it is rodent-caused damage, it won't be covered by the warranty. Fingers crossed for you it's just a jiggly loose contact in one of the switches. But the fact that you're also getting the rear door indication and the trunk release... wow, maybe some higher level controller?

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Thu Feb 13, 2020 6:10 pm
by vreihen
...or maybe the death knell for the 12V accessory battery?????

Re: i3 REX (2015) locking and unlocking by itself while driving

Posted: Fri Feb 14, 2020 6:56 pm
by alohart
Obioban wrote:
Thu Feb 13, 2020 9:38 am
The buttons on the key should do nothing while the car is on. I don't know why they thought anything else made sense.
That's a special feature for North American i3 drivers so that we can sound the burglar alarm siren while driving :lol: