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Door Closed but Door Ajar Open Light, Deep and Warning Stay On

DIY Cost: $0-$150
Est. Time: 30 min - 1.5 hr
Difficulty: Easy

Summary

The door open indicator light switching on while the door is shut closed is commonly caused by a door switch that failed on the open position. Other possible issues include a wiring problem, faulty instrument cluster, or module. 

This guide provides instructions on fixing a problem where the car thinks the door is always open. 

Symptoms

Common symptoms  include: 

  • The constant beep that won't stop even if you close the door
  • Door open symbol on the dashboard.
  • Interior light stays on

Possible Causes

  • The door is not fully closed. Please open the door and close it again. 
  • Faulty door latch. Watch the video to learn more about this problem. 
  • A damaged wire harness. Wire harness often gets damaged at the door hinge where wires go from door to frame
  • A faulty door module. This can affect newer vehicles that have door modules. Door modules can fail either due to software glitches or water damage. 
  • Door switch faulty. Common on older vehicles. Newer vehicles have the door switch integrated into the door latch. 

How to replace a faulty door switch

  1. Verify that the door open warning indicator is lighting up while the door is shut closed.door-open-indicator
  2. Find the location of the door switch, which is typically near the door striker.door-switch
  3. Loosen and remove the switch's retaining screw using a Philips screwdriver.loosen-screw
  4. Detach the switch.screw-removed
  5. Disconnect electrical connection to the switch.disconnect-electricals
  6. Pull out the switch.
  7. Hold the switch in place to prevent the wiring from falling inside the switch frame. Please note that if the wiring falls inside the frame, you will need a few extra steps to retrieve it like, removing the seat then removing the back panel.pull-out-switch
  8. Prepare the new switch.
  9. Reconnect the electrical connector to the switch.reconnect-wire

     

  10. Line up the switch, then install the retaining screw.line-up-switch

     

  11. Verify the installation.verify-installation

     

Frequently Asked Questions

What does the door open warning indicator do?

  • Cars have been equipped with door switches for quite some time now. The car's computer monitors the switch and alerts the driver when it thinks one of the doors isn't closed all the way. This is a safety measure to prevent any doors from opening while you are driving.
Door Closed but Door Ajar Open Light, Deep and Warning Stay On This guide provides instructions on fixing a problem where the car thinks the door is always open.  Symptoms Common symptoms  include: