LED fog lamps not working correctly
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GLK350
LED fog lamps not working correctly
Recently bought a 2011 GLK with the thin rectangular fog/ DRLs. And while the DRLs appear to be working correctly the fog lamps are not. When you switch them on they will flash for a second at the proper brightness and then quit, going completely dark. Switch them off and they go back to DRL mode. Any ideas?
MBWorld Fanatic!
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2013 glk 350
In Europe there are a lot of real narrow streets with no lights and cars parked both sides , the one bulb lit is to help keep the cars from being hit at night . . There is no real extra fog light , the drl is it . If the red rear drivers bulb lights when pushing switch your good .
Thread Starter
Newbie
Joined: Apr 2025
Posts: 2
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GLK350
Yup
In Europe there are a lot of real narrow streets with no lights and cars parked both sides , the one bulb lit is to help keep the cars from being hit at night . . There is no real extra fog light , the drl is it . If the red rear drivers bulb lights when pushing switch your good .
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In Europe there are a lot of real narrow streets with no lights and cars parked both sides , the one bulb lit is to help keep the cars from being hit at night . . There is no real extra fog light , the drl is it . If the red rear drivers bulb lights when pushing switch your good .
There is a rear red fog light that lights up on the driver's side. It is the same intensity as a brake light. Typically, you must turn it on if fog or other circumstances reduce visibility to under 50 meters/164 feet. You must turn it off if visibility is greater than that.
Separately, you can select a left or right rear PARKING light for parking (it's reduced brightness and lower power consumption). You would select left or right based on the side of the vehicle closest to or in the road. In certain countries you have street lights that turn off at a certain time late at night. The lamp post may be marked with a sticker indicating it does not remain on all night. That could be a good location to use the rear parking light even if the street light is illuminated when you park.
So... most "newer" cars have both front fog lights (white or yellow) and a rear fog light (red).
Last edited by MBKLUE; Apr 15, 2025 at 09:10 AM.
