Q: Daytime running lights flashing.

asked by on

I drive a 2001 Mazda B4000 pickup truck. The daytime running lights blink rapidly (as if they are 4-way flashers). The fog lights also do this. Both low and high beam headlights have no problems at all. I've checked the DLR fuse and it is good. Any idea on what this could be? I have also looked for the DLR module, but cannot locate it.

Thanks!
My car has an automatic transmission.

You need to check the charging system to make sure the voltage output is not over about 13.7 volts. If it is then have charging system checked. The fog lights and daytime running lights are on different circuits and should not be affected by each other. The DRL module is mounted by the left side lower radiator mount. You will need to check power at fuses 31 and 33 in the engine compartment fuse box with DRL and fog lights on to make sure voltage is constant and not above 13.7 volts. If voltage is correct and steady then replace the bulbs first for both systems to see if the lights work corre correctly. If not then further system diagnosis will be needed.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Daytime running lights flashing.

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: Air is blowing out of all vents.

It sounds like the blend door may be blocked or has come off of the case itself and is not able to block the air effectively as it should. I would check this by removing the actuator and by moving...

Q: fuel cap check is on

If the gas cap merely being loose is the problem, the gas cap light may go off after 5-10 ignition cycles - starting, driving, and turning off the vehicle. If it does not, you can try checking and/or replacing the...

Q: ldles rough occasionally stalls

What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve reads air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...

Related articles

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...
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...
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...