Skip the auto shop - Our mechanics make house calls

Q: Issue with the blinking headlights, not functioning dashboard and gear shift lights

asked by on

I've recently purchased the car and now there is an issue with the headlights that started to blink. Also, the lights on the dashboard do not work. Could this be related to battery and the connections, as the gear shift lights went out as well?

A: If only these three items are acting up, I ...

If only these three items are acting up, I doubt the battery is to blame. Also, the headlamps share separate ground connections, so a poor ground is not the issue. The Central Electronic module (CEM) acts as a gateway between the high and low speed data networks in your vehicle. It also affects many different parts of the vehicle, so the CEM may be one place to look.

The instrument cluster module (DIM) could also be to blame, as it may be sharing bogus information over the network. Your Volvo involves dozens of different control modules communicating on a data bus, which can be difficult to diagnose. I suggest you leave this one to the professionals, such as the team at YourMechanic. They will be able to inspect your headlight system and let you know what exactly needs repair.

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: My engine flutters when i stop at red light or idle

Hi there. Usually when your engine struggles to maintain a smooth idle while in gear it is attributed to fuel system issues ranging from dirty fuel injectors, to idle control valve that is damaged or a mass air flow sensor...

Q: Where exactly do I locate the turn signal flasher on my 2004 ford expedition?

The turn signal switch on a Ford Expedition is located on the steering column behind the steering wheel. It will be located on the driver side of the vehicle. It will likely be black in color and control the windshield...

Q: My turn signals on my right side don't work at all and the indicator blinks fast like a bulb is out. What could it be?

Have you tried replacing the bulbs on the inoperative side already? It could be the bulbs are out or if the turn signal lighting on that side has a separate ground, there could be a fault there. Consider hiring an...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...