Mercedes Parking Lights Don't Work - The illumination or lighting control module. 300e W124

This 1987 Mercedes 300e W124 does not have working front parking lights. The rear park lights work and the bulbs in the front are good so the headlight switch is also ok. I fixed this by repairing the illumination or lighting control module which is labelled N7 on the W124 circuit diagram. This is the module that provides the 'bulb failure' warning on your dash. This version of the module passes all current from the light switch, via the module then to the bulb. If there is broken solder, the bulb will not work. I have found out that there is a later version of the control module that only senses if a bulb is not working, it does not run the supply current. It does have the same part number unfortunately. You may have to investigate year models to see which version you have.

CHAPTERS
00:00 Why don't my lights work?
00:28 How to remove the Illumination Control Module
01:53 Open and Inspect the Illumination Control Module
03:37 Soldering the circuit board
04:30 Replacing Module and Checking Lights

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