Skip the auto shop - Our mechanics make house calls

Q: My passenger headlight keeps going out, then tap it and comes back on?

asked by on

My passenger headlight keeps going out then I can tap the headlight and it comes back on. I'm wondering what I can do to fix this. Thanks

My car has 178000 miles.
My car has an automatic transmission.

A: Hello. This sounds like the bulb filament i...

Hello. This sounds like the bulb filament in the glass is intermittently loose or the plug connection to the back of the bulb is loose, corroded, broken, or intermittent. If the bulbs are many years old, they have probably lost 20% of their lumen output anyway. So try replacing both headlight bulbs (they should be replaced in pairs), and while replacing them, check the plug connection for dirt, corrosion, salt, or electrical faults.

If you need new plug connector at the headlight, a new connector should be spliced in for you. Dielectric grease is sometimes recommended for the plug area to keep moisture out. Do NOT touch the bulb glass. If you leave body oil on it, the bulb could shatter in use. Also, keep bulbs away from your face as they can shatter and cause eye injury. If you want to have this taken care of for you, a certified professional from YourMechanic, can come to your car's location to replace the headlight bulbs for you.

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

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: oil pressure drops,replaced oil pump, ran for a 2 months, and again pressure drops after afew minutes.

Engine oil pressure may go lower after an engine gets warm. You should have the oil pressure checked with a gauge tester to verify the oil pressure is within specification. If it falls to below specification, then you should replace...

Q: My car changes gears while driving

It sounds like the transmission has delayed engagement. After the engine is started, how long do you wait until you put it in gear? As cars get older and racks up more miles, it never hurts to let the car...

Q: Idles high without accelerating

Hello. Thanks for writing in about your 2002 GMC Safari. There are several components that may be causing this problem. There could be a bad throttle position sensor, a throttle cable that is sticking, or a vacuum leak. All of...

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.