Skip the auto shop - Our mechanics make house calls

Q: Constant fog light

asked by on

VW Polo 2003 1.4 - fog light dash light constantly on when lights on. DS Rear cluster not functioning correctly, no brake/side lights, one light IS on, possibly fog @ 50%(?) - changed all bulbs, fuses and cluster plug... No change... Will go over a bump, everything functions fine for few journeys, another bump and problems again... Nobody can pinpoint issue :(

VW has long had a problem with electrical wiring and connector issues. If the lights work properly after hitting a bump, I would suggest checking each electrical connection, specifically the connector at the tail light cluster on the driver side. The plug itself may look ok, but the actually pins in the tail light cluster and the terminals in the connector may be dirty or loose. I would suggest having a qualified technician, such as one from YourMechanic, diagnose the cause of your inoperative lights.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The fog light passenger side has a cracked glass but works perfectly. Can glass be replaced or do I have to replace the whole fog

The entire fog light needs to be replaced. It only comes as an assembly.

Q: Condensation inside left headlight

Hi there. Headlamp assemblies have a vent so they can breathe with temperature change. They can let in moisture at times. It should clear up after several days of use. If it doesn’t, the housing has a leak and it...

Q: How do I turn on the fog lights?

If your car is equipped with fog lights, you can use them to provide better visibility when driving in foggy, misty and rainy conditions. These are secondary lights that are tied to your primary headlight system, but aren’t technically part...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...