Infiniti Q40 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 Infiniti Q40 Car Door Lock Relay Replacement is $125 with $30 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 Infiniti Q40V6-3.7LService typeCar Door Lock Relay ReplacementEstimate$174.39Shop/Dealer Price$206.74 - $264.42
Show example Infiniti Q40 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 Infiniti mechanics

Real customer reviews from Infiniti owners like you.

Excellent Rating

(9)

Rating Summary
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Ben

41 years of experience
1433 reviews
Ben
41 years of experience
Infiniti Q40 V6-3.7L - Brake Pads Replacement (Rear) - Houston, Texas
Awesome guy. I’ll be recommending him and requesting him for all of my future appointments. Many thanks Ben.

Tinashe

13 years of experience
625 reviews
Tinashe
13 years of experience
Infiniti Q40 V6-3.7L - Car is hard to start Inspection - Atlanta, Georgia
Great and quick diagnosis

Chris

18 years of experience
495 reviews
Chris
18 years of experience
Infiniti Q40 V6-3.7L - Battery - Richardson, Texas
Chris was on time, very helpful, and went above and beyond. Great service. Up and running in 30 minutes. Very smart guy. Couldn’t have asked for more.

Yoel

9 years of experience
212 reviews
Yoel
9 years of experience
Infiniti Q40 V6-3.7L - Starter - Philadelphia, Pennsylvania
Yoel was really good at diagnosing the not so straight forward issue with my car. It was one of a kind where the battery was draining extremely quickly even when the engine was not running. Eventually it turned out to be a problem with the starter which was correctly diagnosed by Yoel. I highly recommend him to anyone who is having auto problems.

Excellent Rating

(9)

Rating Summary
9
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Number of Infiniti Q40 services completed
99+
services done by our mechanics
TOTAL NUMBER OF EXPERT Infiniti MECHANICS
900+
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