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check wiring on transmission.there is a conector there that might not be pluged in or the wires might be broking somewhere.
Could be blubs burntout,fuse blown or a bad relay switch. If that's not problem. Then could be switch on the shifter or on transmission depends on year of car. when you shift to reverse it should trigger switch for backup lights.Hope this helps.
first check fuses,then bulbs,then reverse switch on trans mission,it might need replacing,its screw into your transmission.
What could be the problem when a 2002 Volvo won't stay stared
A car that won't move when in reverse could indicate a problem with the transmission. It could also indicate a problem in the gear selector.
I also own a Nissan Pulsar Q hatchback with the same problem. One reverse light is orange, the other is white. The dealership when attempting to fix this problem assumed I had two white reverse lights so my car short circuited. I have been told for the orange light to work I have to turn on the headlights, (sounds a bit dodgy) Not sure if it makes sense, but I hope it helps.
Very possible ... best to check the wiring with a voltmeter checking for +12vdc.
It could be as simple as bulbs burned out or your switch could be defective.
could be the neutral saftey switch .
Not too sure if this will help. I have a Volvo 1995 S90 with a similar problem - power windows, indicators and dash lights all were not working. I found that it had to do with the ignition. When i turn on the car and discover that these aspects are not functioning properly i twitch the key a millermeter towards me and they all fire up.- Could be a different problem, but thought you might want to know...Volvo AnswerNot too sure if this will help. I have a Volvo 1995 S90 with a similar problem - power windows, indicators and dash lights all were not working. I found that it had to do with the ignition. When i turn on the car and discover that these aspects are not functioning properly i twitch the key a millermeter towards me and they all fire up. - Could be a different problem, but thought you might want to know...
Check the fuses first then check the bulbs.
There is a backup switch in the gearbox. When you shift into reverse, the gear box switch contacts the switch and lights the white reverse lights. If you find that the reverse lights don't work it could be that the switch is not being triggered by the mechanism inside the gearbox. This is providing that everything else is working; wiring,bulbs,etc.