Front Marker Lamps Replacement Video DIY



The side marker (shorter and outer rectangular lens), parking light (round lens) and indicator (longer and inner rectangular lens) bulbs in the left hand head lamp unit of our ML had to be replaced. The indicator lamp replacement is easy, but for the replacement of the other 2 bulbs I had to remove the left front wheel as well as the forward half of the plastic wheel well splash liner located inside the wheel arch. As stated in the video, the bumper and head lamp unit do not need to be removed to replace the bulbs. The side marker and parking light bulbs in the RH head lamp are lit in the attached photo of that head lamp.
The side marker and parking light take the same bulb type but the side marker takes an orange coated bulb whereas the parking light takes a clear bulb.
Last edited by SiRudBi; Dec 21, 2016 at 01:24 PM.



Side marker and parking light lamps on in the right hand side head lamp unit.
Left hand side head lamp unit.
Found this image showing the back of a left hand side head lamp unit.
Parking light bulb holder location on the back of the head lamp unit.
It is difficult and unnecessary to remove the electrical connector from the bulb holder while the bulb holder is still in place. It is much easier twist (anticlockwise) and remove the bulb holder/electrical connector assembly all in one piece.
The photo is somewhat over exposed to clearly see the cut-outs in the hole.
It is very difficult to reach the side marker bulb holder. Twist anticlockwise and pull out to remove.
Side marker bulb holder removed.
Indicator lamp holder removed.
Note the key on the side of bulb holder that needs to be aligned with the cut-out in the hole in order install.
The side marker and parking light electrical connectors are the same.
It says 'Turn Signal' on the label, but these bulbs are not for the front indicators on the 2008 ML.
New bulbs for the side marker and parking light.
Indicator bulb.



This image shows the underside of a LH head lamp unit. Note how deep you need to reach in underneath the low beam housing to get to the side marker bulb holder when the head lamp unit is installed in the vehicle. Even the parking lamp bulb holder sits deep in compared the indicator lamp bulb holder.
Last edited by SiRudBi; Dec 23, 2016 at 01:43 AM.
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These are all excellent pictures thanks for the work to show where these area for other owners. I would add use some di-electric grease on the bulb contacts, the O-Ring and the plug if you disconnected it. It allows for easier connection removal etc. Mine took 15 minutes, needle nose pliers, gentle approach.
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