Mercedes-Benz S430 Car Door Lock Relay Replacement at your home or office.

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Car Door Lock Relay Replacement Service

How much does a Car Door Lock Relay Replacement cost?

On average, the cost for a Mercedes-Benz S430 Car Door Lock Relay Replacement is $136 with $41 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2004 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$196.79Shop/Dealer Price$234.74 - $309.22
2001 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$176.79Shop/Dealer Price$214.77 - $289.27
2000 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$176.79Shop/Dealer Price$214.77 - $289.27
2003 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$176.79Shop/Dealer Price$214.73 - $289.20
2005 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$176.79Shop/Dealer Price$214.80 - $289.32
2006 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$176.79Shop/Dealer Price$214.77 - $289.27
2002 Mercedes-Benz S430V8-4.3LService typeCar Door Lock Relay ReplacementEstimate$181.79Shop/Dealer Price$219.53 - $293.85
Show example Mercedes-Benz S430 Car Door Lock Relay Replacement prices

What is the Door Lock Relay all about?

Power door locks used to be a luxury feature on vehicles, but they've become so mainstream that nearly every vehicle is now equipped with them. The lock’s function is to make securing your vehicle, as well as passengers, simple and easy. Instead of reaching across the vehicle to lock or unlock the doors, it can be done by simply pressing a button. Pressing the button completes a circuit, enabling the lock actuator to receive power which activates the locking mechanism to the desired position. The circuit is routed through a door lock relay, which acts as a switch to direct the power to actuators on the door locks. When unlock is pressed, the door lock relay switches from a neutral position to activating a pulse of power to the unlock circuits on the actuators. When the lock button is pressed, a pulse of power is switched to the lock circuit of the actuator to lock the doors. When the relay for the door locks is not working properly or sticking, either the lock function, the unlock function, or both are inoperative.

Keep in mind:

  • When service is performed on any electrical system, the battery should be disconnected to prevent accidental damage or injury.
  • If the door lock relay needs to be replaced, it can be indicative of an underlying concern with the power door locks.
  • Some vehicles equipped with remote keyless entry will find the key fob operates the driver’s door lock even while the door lock relay is defective.

How it's done:

  • Test the operation of electric door locks.
  • Test the fuse for that circuit.
  • Test the relay.
  • Replace the faulty relay.
  • Test for proper operation of electric door locks.

Our recommendation:

If you are experiencing problems with your power door locks, have one of our expert technicians diagnose and repair the system. Relays and electrical systems can be complex, and a broken wire or door lock actuator problem can easily mimic the symptoms of a door lock relay and vice versa.

What common symptoms indicate you may need to replace the Door Lock Relay?

  • Power door locks don’t lock when you press the button, while the unlock feature works.
  • Neither the lock nor unlock functions work.

How important is this service?

Power door locks are a convenience feature on your vehicle. If the power locks aren’t working, you can use the key to unlock your door and the locks can be manually operated as well. Have the power door lock system repaired at your convenience.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(82)

Rating Summary
78
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1
78
2
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1

Jason

20 years of experience
26 reviews
Jason
20 years of experience
Mercedes-Benz S430 V8-4.3L - Electrical components are not working - Stockbridge, Georgia
Jason was excellent! He knew what he was doing and efficiently identified the problem.

Jamahl

20 years of experience
830 reviews
Jamahl
20 years of experience
Mercedes-Benz S430 V8-4.3L - Radiator Hose Repair - Lake Mary, Florida
Excellent

Juan

22 years of experience
70 reviews
Juan
22 years of experience
Mercedes-Benz S430 V8-4.3L - Air Filter - Miami, Florida
Very professional and punctual. Will use him again for future work on all of my vehicles.

Attila

19 years of experience
917 reviews
Attila
19 years of experience
Mercedes-Benz S430 V8-4.3L - Car is not starting - Bayonne, New Jersey
Walked me through what could be the issue thoroughly, would recommend!

Excellent Rating

(82)

Rating Summary
78
2
1
0
1
78
2
1
0
1
Number of Mercedes-Benz S430 services completed
902+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

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