Symptoms of a Bad or Failing Daytime Running Lamp Module

Daytime running lights are a safety feature found on many late model vehicles. Daytime running lamps are simply lights on the front of the vehicle, usually built into the headlight assembly, that activate whenever the vehicle is in motion. They are a separate light from the actual headlights, and the light provided by them simply gives an additional visual cue to help make the vehicle more visible to pedestrians and other drivers on the road. Usually the daytime running lamps cannot be manually turned on and off and are controlled automatically by the daytime running lamp module. The daytime running lamp module is the computer that controls the daytime running lamps, and any issues with the module can cause the lamps to not function properly. Usually a bad or failing daytime running lamp module will produce a few symptoms that can alert the driver of a potential problem that should be serviced.

1. Daytime running lamps do not come on

One of the most common symptoms of a potential problem with the daytime running lamp module is daytime running lamps that do not come on. Since the module is what controls the lamps and feeds them power, if the lights fail, the daytime running lamps will be left without power and will not function as a result.

2. Daytime running lamps stay on while the car is off

Another symptom of a potential problem with the daytime running lamp module are daytime running lamps that stay on even when the vehicle is turned off. Most daytime running lights are wired to turn off when the vehicle is no longer in motion, or when the key is removed from the ignition. If the lights remain on even after the key has been removed, then that may be a sign that the module has possibly had an internal or wiring short and is supplying power to the lights even when it is not supposed to. This will cause accelerated wear on the bulbs and housings, as well as a parasitic drain on the battery until the issue is addressed.

3. Burning smell

Another symptom of a potential problem with the daytime running lamp module is a burning smell. If the daytime running lamp module has any issues that interfere with the proper regulation of power to the lamps, it may cause the bulbs, wiring, or even the module itself to overheat. This may result in a burning smell coming from the engine bay, and maybe even faint smoke, as the wiring overheats and the insulation burns up. If this problem is not quickly addressed, it can quickly become a safety hazard.

The daytime running lamp module is a component found on many newer vehicles and is necessary to the proper operation of the daytime running lamps. If you suspect that your daytime running lamp module may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if your car needs a daytime running lamp module replacement.


Next Step

Schedule Vehicle Body Electrical and Lighting Inspection

The most popular service booked by readers of this article is Vehicle Body Electrical and Lighting Inspection. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Vehicle Body Electrical and Lighting Inspection reviews

Excellent Rating

(149,537)

Rating Summary
140,027
5,194
1,055
749
2,512
140,027
5,194
1,055
749
2,512

James

12 years of experience
233 reviews
James
12 years of experience
Honda Accord - Starter - San Francisco, California
Honda CR-V - Alternator - Brisbane, California

Marco

29 years of experience
129 reviews
Marco
29 years of experience
Ford F-150 - Vehicle Body Electrical and Lighting - Highland, California
Great experience! Marco showed up right on time and was very polite and pleasant. He got right to work and assessed my problem quickly and made recommendations for repair which I was able to take care of myself later. Very good experience and would definitely use Marco again!

Matthew

33 years of experience
991 reviews
Matthew
33 years of experience
Pontiac Firebird - Vehicle Body Electrical and Lighting Inspection - Newport News, Virginia
Arrived on time, very professional and knowledgeable - especially about my old car.

Dwaine

45 years of experience
39 reviews
Dwaine
45 years of experience
Chevrolet Suburban 1500 - Wheel Hub Assembly Replacement (Driver Side Front) - Tampa, Florida
Dwaine is an excellent mechanic!! He is knowledgeable, friendly, and honest. I trust his opinion and his skills. I'm recommending him to ALL of my family members!

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

How to Make Car Switches Last Longer
Every Every feature in your car is controlled by a switch or button. Most are actively controlled, such as the power windows and power door locks, by means of pressing a button. Systems that are actively controlled include: The...
Symptoms of a Bad or Failing Ballast Resistor
Common signs are the vehicle not starting or starting but immediately dying. Only a professional mechanic should handle the ballast resistor.
How Are Car Wires Protected From Damage?
The highest tech cars can contain miles of electrical wiring. Wires must be secured and protected from heat and debris in order to work properly.

Related questions

Engine Swap from 1981 1400cc to 4g63.

Hi there. You can swap the engine from a 1981 model to a 1997 model, but you will have to swap the entire power plant, the engine, the transmission, and all of the electronics including the exhaust system through the...

The heat, ac, and defrost isn't blowing out the vents

Blower speed in your application is controlled by a replaceable resistor block in the blower motor circuit. If various fan speeds have become unusable, and now you are left with nothing, a possibility is all positions in this resistor block...

Abs tracking lights randomly goes off and on

The ABS will need to be tested to see if you have a problem with one of the wheel sensors. The only way to tell what sensor is having a problem is to have the computer scanned and diagnosed. I...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com