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On average, the cost for a Mercedes-Benz SL400 Headlight Door Motor Replacement is $303 with $208 for parts and $95 for labor. Prices may vary depending on your location.
| Car | Service | Estimate | Shop/Dealer Price |
|---|---|---|---|
| 2016 Mercedes-Benz SL400V6-3.0L Turbo | Service typeHeadlight Door Motor Replacement | Estimate$530.39 | Shop/Dealer Price$651.74 - $976.42 |
| 2015 Mercedes-Benz SL400V6-3.0L Turbo | Service typeHeadlight Door Motor Replacement | Estimate$510.39 | Shop/Dealer Price$631.77 - $956.47 |
Your headlight door motor is what operates the raising and lowering of your headlight doors. It’s a single motor that is mounted just behind the center grille, wound with two field windings. The assembly contains internal limit switches and a worm gear drive. In most vehicles, there is a relay circuit breaker assembly immediately to the right of the steering column. In other vehicles, it is mounted on the fuse block.
When you turn on your headlights, the relay becomes energized, and the doors open. A limit switch stops power from going to the motor. When you turn off your headlights, the circuit is completed, the doors close, and another limit switch stops power from going to the motor.
Due to the importance of your headlight doors, it’s essential that the headlight door motor works properly. If the vehicle has been sitting, repeatedly activating the switch may loosen the circuit and fix the issue. If that method doesn’t work, have one of our expert mechanics inspect and replace the headlight door motor if necessary.
Headlight doors that won’t open can cause some serious trouble, especially if you are driving at night. Any problem with your headlights requires an immediate attention from one of our expert mechanics. This is a safety issue and one that should be dealt with as quickly as possible.
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