Mercedes-Benz GLS550 Fog Light Relay Replacement at your home or office.

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Fog Light Relay Replacement Service

How much does a Fog Light Relay Replacement cost?

On average, the cost for a Mercedes-Benz GLS550 Fog Light Relay Replacement is $133 with $38 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2017 Mercedes-Benz GLS550V8-4.7L TurboService typeFog Light Relay ReplacementEstimate$191.37Shop/Dealer Price$220.47 - $285.25
Show example Mercedes-Benz GLS550 Fog Light Relay Replacement prices

What is the Fog Light Relay all about?

Your fog lights don’t need to be on if the headlights aren’t on. For that reason, a fog light relay is used. The fog light relay acts as a switch, enabling the fog lights to come on only when certain criteria are satisfied. Typically, fog lights do not come on when the high beam headlights are on either. The relay directs power to the fog lights only when the switch is on and the right lighting circuits are on. The use of a relay means a low voltage fog light switch can be used. If the full voltage of the fog lights runs through a switch, the switch will become very hot and overload.

Keep in mind:

  • If your fog lights are drawing too much current, the relay can sustain damaged; conversely, a bad relay can cause damage to other components in your lighting system.

How it's done:

  • The faulty fog light relay is identified and access panel removed
  • The defective fog light relay is removed
  • The new fog light relay is installed
  • The fog lights are tested for proper operation and access panel installed
  • The fog lights are finally checked for proper operation

Our recommendation:

Fog light operation is checked when regular maintenance inspections are performed. If the fog lights aren’t working, have them diagnosed and repaired by one of our expert mechanics.

What common symptoms indicate you may need to replace the Fog Light Relay?

  • Turning on your fog lights only result in a clicking sound
  • Fog lights do not work and the appropriate switches don’t light up
  • Fog lights are on all the time

How important is this service?

All lights are required to operate as designed for a vehicle safety inspection. Not only will your vehicle not pass the inspection if the fog lights aren’t working, but your night vision will be obstructed. Have the fog light relay replaced as soon as it is deemed faulty.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

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Rating Summary
5,210
189
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5,210
189
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Jordan

8 years of experience
96 reviews
Jordan
8 years of experience
Mercedes-Benz GLS550 V8-4.7L Turbo - Brake Rotor/Disc Replacement (Rear) - Kissimmee, Florida
perfect service thanks

Jordan

8 years of experience
96 reviews
Jordan
8 years of experience
Mercedes-Benz GLS550 V8-4.7L Turbo - Trunk Lift Support Shocks - Kissimmee, Florida
On time, perfect service

Travis

13 years of experience
160 reviews
Travis
13 years of experience
Mercedes-Benz GLS550 V8-4.7L Turbo - Car Battery Replacement - Waxhaw, North Carolina
After the installation, the front right seat malfunction notice popped up on my car screen. Tried to call the technician, but didn't answer nor return my calls

Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
Mercedes-Benz SLK280 V6-3.0L - Battery - Oak Park, Illinois
He was punctual, pleasant and fixed the problem expeditiously

Excellent Rating

(5,600)

Rating Summary
5,210
189
54
28
119
5,210
189
54
28
119
Number of Mercedes-Benz services completed
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