Jeep Grand Cherokee, backup lights always on. Any ideas? Thanks.?

Answer 1

Mis-wired, or if you have a backup light switch, it could be stuck on. Always on? Even when you turn the vehicle off? If so it's wired into a battery lead somewhere. Always on, like when your other lights are on? Probably spliced in wrong. Sounds like somebody did a home repair, and didn't quite know what they were doing.

Answer 2

has the vehicle been in an accident or had any aftermarket elect component added that you know of? i agree with you, o2 sensor probably not, wiring issue more than likely. i doubt if it's the harness, more like a short somewhere that would effect the pcm thus setting the code. Now, just have to figure out in addition to the headlight switch being turned on, the short( I assume it's a short) is setting the code by effecting another elect part, like maybe the alternator somehow. i believe that has an internal regular (in the alt.). i wish you luck on this one my friend, elect problems can be a nightmare as you know and is why shops charge $100.00 hr. sometimes to diagnose elect problems. ps: at least when you reset, the light stays off so it's not a hard code, but, that would be easier to diagnose but. probably more expensive to fix.

Answer 3

the reverse light switch has went out,,they either go out one of two ways,,they stay on all the time,,or don't work at all ,yours is the unlucky one ,you need to get it replaced as soon as you can though,,its not an expensive job at all,25 bucks parts and labor will take care of the whole thing,good luck with it,i hope this help,s.,have a good x-mas.,i do this for a living so I'm real familiar with those jeeps.

Answer 4

You have a stuck backup light switch. Change it.

Answer 5

A short in the wiring....take it to your nearest Jeep Dealer!! :)

Answer 6

Try driving forward? Hee.

Answer 7

It could be that you always notice it while in reverse.