DIsconnecting battery before removing rear bumper?

[rtrombley3]

I'm having my low profile spoiler swapped out for a high wing in a couple of weeks. I remember reading somewhere where an owner did the same thing and didn't disconnect the battery before starting the job. After installing the new spoiler and re-connecting all of the harnesses connected to the rear bumper, tail lights etc, it resulted in a bunch of error codes. Should the battery be disconnected prior to removing the bumper to be safe?

 

[dyoung]

It wouldn't hurt to disconnect the battery. You have to disconnect and reconnect a number of plugs to remove the bumper.

 

[sam9158]

I've have removed my bumper twice with the battery connected and have had no issues with the car showing codes. I can see you having issues with setting codes if you start the car with the bumper removed. On power up the computer is running self diagnostics and is looking for the back up sensors which are not plugged in. This will set off codes.

 

[crazylegs]

I've have removed my bumper twice with the battery connected and have had no issues with the car showing codes. I can see you having issues with setting codes if you start the car with the bumper removed. On power up the computer is running self diagnostics and is looking for the back up sensors which are not plugged in. This will set off codes.

View attachment 106980

Had mine off as well, no issues. But no harm if you decide to disconnect the battery