Headlight Problem - Ballast? (kind of urgent)
#1
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Headlight Problem - Ballast? SOLVED!!!
Hey guys, i have this problem for couple of days now, drivers side low beam is not working, blinker is okay though. I already checked the bulb and fuse (f66), they seem to be okay. Should the issue be ballast or is there any other option to look into?
Last edited by baris41; 10-11-2021 at 12:02 PM.
#2
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2013 ML350 Bluetec
first swap the bulbs from left to right and right to left. If the problem remains where it was, then swap the ballasts in the same manner. If the problem follows the ballast, you know where the problem is.
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baris41 (09-26-2021)
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#4
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I swapped the bulbs, they are okay. Might there be any other option other than ballast?
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baris41 (09-27-2021)
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2008 E350 (W211 @170K), 2012 ML350 (W166 @119K), 2014 E350 Sport (W212 @96K), 2015 ML350 (W166 @92K)
You may disconnect it from the bulb. measure the voltage at the connector and it passes, but when connected it may be in a different position, stretching of the harness to reach the bulb, bending, etc and it fails again. A nasty intermittent issue sometimes.
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#10
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Or go to mbepc.net, search by your car's Vin, when the data card page comes up the top block will have a description of your car such as w211.074. in that block click the hyperlink to take you to the parts catalog. There you can search in the electrical section and find the part numbers that apply to your car. It may show several different part numbers but it will also show the early part numbers were superseded by a later part number. Any of them will work however. If possible, however, get the latest part number you can as it has the latest improvements.
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#13
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For future use; i ordered the part on Aliexpress. It's much easier to replace it through fender guard/lining (30min) instead of removing front bumper.