Disconnect Battery

[nickbrown_500]

Just wanted to check, if anyone knows when disconnecting the battery.

Does everything just power up as normal once re-connecting?
Just want to check I wont mess anything up before disconnecting.

 

[Don1961]

I recently had to disconnect the battery on my 2018 FR. When it was reconnected I got loads of fault codes... ECS, Front assist not available, TPMS not available, steering angle sensor and a couple of others on Obdeleven. None of which could be cleared.
After my initial panic I took it for a drive and it seemed to recalibrate and everything is fine now. Cleared faults on obdeleven, rescanned and all clear.
The Infotainment all seemed OK. Though the ambient/instrument lighting came on at full brightness.

Apparently the turning of the steering fully left and right sorts things out.

Hope this helps

 

[Walone]

You will get some errors shown on the dash, they should go away after a bit of driving. The errors will be stored in the various ECU's.

 

[nickbrown_500]

thanks guys, just didn't to rush into it and then cause problems.

 

[Marko70]

why do you need to disconnect battery out of interest?

 

[nickbrown_500]

why do you need to disconnect battery out of interest?

Changing the steering wheel, so need to remove the airbag. Would prefer the battery to be disconnected

 

[Walone]

Changing the steering wheel, so need to remove the airbag. Would prefer the battery to be disconnected

That's how it should be done!

 

[andycupra]

disconnect battery and leave for a while before doing this work. (some say an hour)

also, the main issue with battery disconnection is the radio. some cars i've not had an issue, but others expect the radio code on reconnect. so make sure you have this

 

[Walone]

disconnect battery and leave for a while before doing this work. (some say an hour)

also, the main issue with battery disconnection is the radio. some cars i've not had an issue, but others expect the radio code on reconnect. so make sure you have this

Mk3 Leons don't have radio code, it uses component protection which links the radio to the VIN.