Intermittent full electrical malfunction. Everything dead. No electrical power.

[E43509]

Has happened once to twice a week now since mid December. Walk up to locked parked car, mirrors begin to auto extend, halt part way. Have to use mechanical key to enter car. No lights working in car, everything dead. Wait a minute or two and clock resets to 12:00 and then rotates to current time and car starts up with no problem. Battery tested fine. I also tightened up all connections for battery in trunk and all its connections to fuse box under hood. Nothing was loose. Coincidentally but maybe not related, just subscribed to remote / bluelink in mid December which took over two weeks for them to get working. Any thoughts? Taking to dealer next week but not reproducible.

 

[celltech]

Good one... So when you walk up to the car and it "dies"...if you wait a min without getting inside will it come back to life?

 

[E43509]

Good one... So when you walk up to the car and it "dies"...if you wait a min without getting inside will it come back to life?

Yep, about once a week it does this behavior. I haven't tried waiting outside yet but will give that a shot. It has been a few days now since I gave every battery connection a little tightening and pushed on every fuse under the hood. No recurrence yet.

 

[celltech]

So I assume when you tightened the battery terminals down they were clean and corrosion free? Did you also tighten the ground to the frame? And what method was used to test the battery?