02/03 C220 headlights electronic adjustment

Put it back the way it was , led lights are causing the problem . Head lamps are controlled by LCM-lighting control module -your messing with electronics inside .

Lighting Control Module (LCM)
The LCM eliminates the electronic interference and heat associated with the thermoelectric devices used previously. The LCM is a microprocessor based module that controls several vehicle subsystems. It responds to electrical input signals from various switches, sensors, and external modules.
LCM exterior lighting subsystem functions include:

• Headlamps with autolamps
• Turn signal lamps/hazard flasher lamps
• Cornering lamps
• Parking lamps
• Battery saver

It's best to have your headlights adjusted by a shop that has the equipment to do the job. Head light aiming equipment takes into account how level the car is before adjustments. The cost of a ticket for misaligned headlights is more than getting them aimed properly.

Check where the brightness adjuster is for your instrument panel lighting on your vehicle because there will be one. Sounds from what you have said that this is being moved each time you are turning on and off the headlights because they are totally separate controls.

Is there a Check Engine light on?
Either the Idle Speed Motor isn't working or it has reached its limit of adjustment (for one of several reasons)
The idle speed motor is controlled by the engine computer - looking at sensor inputs to adjust the idle. It is merely a controlled air bleed.
Electrical problem will be: motor - wiring to the motor - computer - or sensor input to computer
Non - Electrical problem: air entering the intake manifold not controlled by throttle body i.e. vacumm leak from damaged hose, gasket or crack in manifold - also you may have the throttle body out of calibration (open too much)
If you need to find a vacumm leak you can use a can of carb cleaner - with engine running - spray lightly around vacumm hoses and gaskets - when the engines rpms pickup it is leaking in that area.
WARNING: Carb Cleaner is Flammable - be careful not to start a fire - and have a fire extinguisher handy just in case.
Please let me know what you find out and if this helps at all.

his Season:What Are Allergies?Tax Time

1. Home
2. Car Repair & Maintenance
3. Car Lights Repair & Maintenance
4. Adjust Headlights
5. How to Adjust a Mercedes' Headlights

How to Adjust a Mercedes' Headlights

In the U.S. the type, adjustments, and illumination factors of all automobile lighting devices are regulated by the Federal Motor Vehicle Safety Standard 108. The headlights must function and be adjusted correctly. Your high beams must disperse their beams straight forward and low beams down and to the right while safely providing illumination without too much or too little glare. It is wise to check the headlight adjustment on your Mercedes at least every year. Doing it yourself will save you time and money. It will also make driving safer for you and others you may meet on the road at night. All it takes is time, some basic tools and a little patience.
Other People Are Reading

• How to Adjust the Headlights on a 300D
• How to Aim the Headlights of a ML320

Things You'll Need

• ratchet set
• 1/4-inch screwdriver, at least 8 inches long
• flashlight (if needed)

Show More Instructions

1. • 1 Open the hood and prop it up.
     
   • 2 Remove components if necessary to allow access to the left/right and up/down adjustment knobs. They are on top of the rear side of the headlight. The upper knob adjusts the beam to the left and right. The lower knob controls up/down adjustments.
     
   • 3 Park with the passenger side of the car parallel to a solid fence or wall and about four feet from it. When there is dim light or darkness, turn on the lights and use your screwdriver to adjust the up/down knob on the passenger-side headlight until the light beam is parallel to the ground (you can see the beam of light against the surface of the wall).
     
   • 4 Turn the car so that it faces the wall approximately one car length away. Adjust the up/down knob on the driver-side headlight until it is at the same level as the passenger side headlight. Then adjust both sides until the small groove on top of the beam cutoff is directly in front of the light.
     
   • 5 Reinstall any components that you removed. Close the hood.
     

Tips & Warnings

• This is method is generic for Mercedes models. Some may differ, as there are many models out there.
  

Suggest item
Related Searches: References

• Mercedes-Benz Forum
• fixya.com: Technical Support, Manuals, Troubleshooting and Product Recommendations

More Like This

• How to Adjust the Headlights on a 300D
• How to Aim the Headlights of a ML320
• How to Replace the Headlights on a 1985 Mercedes Benz

Comments

I hope this info helps!

ADJUSTMENT

HEADLIGHT AIMING

CAUTION: Turn off the light before adjusting headlight aiming. If the light is necessary to check aiming, do not turn on for more than 2 minutes.

1. Before checking the headlight aiming, be sure of the following:

• The area around the headlight has not sustained any accident, damage or other type of deformation.
• Vehicle is parked on level ground.
• The inflation pressure of tires is correct.
• Vehicles gas tank is fully charged.
• Bounce the vehicle several times to normalize the suspension.
• Make certain that someone is seated in the driver s seat. Turn the headlights on and then adjust the low beam pattern to the following positions on the screen.

1. Position the headlight beam leveler switch to "0" .

1. Rotate the adjusting screw (A) to adjust aim.

did you manage to fix this problem as i'm having the same problems. the car had a flat battery so tried jump starting it but no luck, replaced battery but can only get headlights/windscreen wipers/passenger window and hazards to work. car won't start and alot of the interior controls are dead, i've checked fuses (replaced 2)

• Always adjust lights with optical headlight aimer VAS 5107, using detailed aiming procedure and specifications
• Low and high beams are adjusted simultaneously.

Left headlight (adjustment screws for right headlight are mirror image):
1 - Lateral adjustment 2 - Height adjustment

• Access adjustment screws through hole in lock carrier (Phillips head or socket head).
• Turn the adjusting screws for lateral adjustment -1- and height adjustment -2- until the correct setting is achieved.

NOTE: Where equipped, ensure equal movement/function of headlights during automatic headlight range adjustment.

some of these vehicles have a lever on the back where the bulb is that adjusts the shroud in front of the bulb ,but as so many cars get permantly shipped abroad that they dont do it now so you have to buy dealer only headlights

We would need more information on what vehicle you have. But there are usually two screws that are spring loaded. The one to the side of the headlight is to turn left and right. And the one on the top controls the up and down movement. Thanks for asking!