January 18, 2022, 02:51:28 PM
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Author Topic:  Drivers headlight turns off while driving  (Read 391 times)

Offline Mml665

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Drivers headlight turns off while driving
« on: December 28, 2021, 11:38:18 AM »
So the newest adventure of owning an MKS is while driving the drivers headlight will turn off, when I cycle the headlight switch off then on to automatic the headlight will turn on again. Sometimes it happens often sometimes once or twice while driving at night.  So what parts should I check or test first?

Also passenger headlight is showing condensation in the lens, is it possible to reseal these headlights?

Offline Macgyver

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Re: Drivers headlight turns off while driving
« Reply #1 on: December 28, 2021, 11:53:30 AM »
Do the head lights turn off in manual mode ? If they dont then its something to do with the light sensor.

Offline Mml665

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Re: Drivers headlight turns off while driving
« Reply #2 on: December 28, 2021, 11:56:12 AM »
Do the head lights turn off in manual mode ? If they dont then its something to do with the light sensor.
Well only the drivers headlight turns off, but I will test in manual mode tonight

Offline Mml665

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Re: Drivers headlight turns off while driving
« Reply #3 on: December 31, 2021, 12:58:44 AM »
The drivers headlight shuts off in manual mode as well.

Offline Tjamieson

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Re: Drivers headlight turns off while driving
« Reply #4 on: January 06, 2022, 01:45:04 AM »
The drivers headlight shuts off in manual mode as well.
I have this exact same in my 2011 SHO. Been dealing with it for quite some time too. It

Offline Mml665

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Re: Drivers headlight turns off while driving
« Reply #5 on: January 09, 2022, 02:39:29 AM »
The drivers headlight shuts off in manual mode as well.
I have this exact same in my 2011 SHO. Been dealing with it for quite some time too. It
Any idea of what the cause could be?

Offline Tjamieson

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Re: Drivers headlight turns off while driving
« Reply #6 on: January 09, 2022, 11:16:06 AM »
None whatsoever ever. Looked over fuses, done all the basic stuff troubleshooting and didn

Offline SHOdded

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Re: Drivers headlight turns off while driving
« Reply #7 on: January 10, 2022, 07:47:02 AM »
have you replaced the bulbs or are they original to the vehicle? sometimes condensation is caused simply by an improperly seated bulb or dust cap.  dry it out with a hair dryer first, make sure bulb and cap are properly seated, then reevaluate.

MKS comes with HID standard I think.  if so, the ballast could be failing, or the headlamp switch/FLM could be.  each bulb is fused separately at 20A and likely is in the engine compartment fuse box (BJB). (Fusions have them in the passenger compartment lol.)  IME, fuses rarely blow, most times they need reseating. unless there is an external force like water, rust, dirt, etc.

one other possibility is the shutter inside the headlamp that switches high to low/vice versa.  might not be working correctly. make sure it is activating when commanded. do see these fail from time to time.

if you need a used headlamp, check ebay or car-part.com.
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

Offline Mml665

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Drivers headlight turns off while driving
« Reply #8 on: January 10, 2022, 08:51:10 AM »
Thank you Shodded

 


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