Skip the auto shop - Our mechanics make house calls

Q: After 10-15 minutes the headlight (both hi and low) will cut off and on.

asked by on

After a brief period the headlights will turn off and on like there is a short in the switch . After waiting a couple of minutes with the headlights off and then turn them back on the same thing occurs again. But the switch seems to not be the problem since it happens at different times and not all the time.

A: Hello - your "on again, off again&quot...

Hello - your "on again, off again" headlight symptoms indicate an electrical connection that is poor, that heats up while the headlights are operating, then fails. This could be a headlight relay, the headlight switch itself, or a wiring connection between the battery and the headlights. The poor connection gets hot trying to conduct the needed power, literally burns (which could cause a fire), creating an additional minute layer of oxides on the connector, then fails to conduct power. After cooling, it will pass some current again, but the process repeats until no power is conducted to the headlights. I would recommend an electrical inspection of the headlight circuit to resolve this problem before serious wiring damage or fire results. A mobile, professional mechanic, such as one from YourMechanic, will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: My brake lights and head lights won't come on. It's not a blown fuse.

Hello, thanks for writing in. If all of these lights stopped working at the same time then you either have a main switch problem or a voltage issue from the fuse box. From my experience with this vehicle it is...

Q: Headlights and turn signals don't work

Your Dakota's headlight and turn signal issues could stem from the multifunction switch on your steering column, which controls the turn signals and high beam input. Another possibility is the Front Area Module, which controls all of your exterior lights;...

Q: My headlights do not turn off

Your vehicle is probably equipped with daytime running lights, whereas the other car you saw was not. On your vehicle, these lights will stay illuminated regardless of whether the exterior light switch is in the on or off position. There...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.