Q: Rear door latch switches disabled? How to re-enable?

asked by on

Hello-

I just bought a '14 F-150 SCrew. When I open either of the rear doors, the interior lights do not come on, and the door ajar alarm does not go off (if the truck is in ACC/running). I thought the previous owner might have jumpered the appropriate lines on the latches/switches for the rear doors to make them always appear shut, but I just pulled the door panel and ohmed out those lines at the latch pigtail (harness side), and they aren't shorted together. Also, I've got a scan tool that can monitor PIDs, and the rear doors always show as 'closed', even when actually open.

Do you have any ideas why this might be the case, and how I can re-enable those door switches?

Thank you!

My car has 42000 miles.
My car has an automatic transmission.

The rear door ajar switches are parts of the latch in the doors. There is no on or off switch to disable them. The problem is most likely caused from the ajar switch switches inside both latches are stuck in the closed door position. This means the switch is stuck open and not completing contact to ground signaling the body control module that the door is open. This is why the PID does not signal the door is open and turn on the light for you. You will need to replace the door latches if you want the doors to work the interior lights. You should contact a mechanic like one from YourMechanic to come and verify the latches are bad and replace latches

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Rear door latch switches disabled? How to re-enable?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine idle fluctuates

There are a couple of reasons your engine idle may run high such as a vacuum leak or a dirty or faulty idle air control valve. The idle air control valve reads the air intake as it is mixed with...

Q: Check engine light keeps coming on

Unfortunately, the repair information I have for this vehicle and code are rather sparse. Doing a little research, I found this code stands for "Charge Air Cooler Efficiency Below Threshold." The most common cause of this code does appear...

Q: Keyless entry and auto starter

Hello. It is indeed possible to program your vehicle to have keyless entry and auto start. Most vehicles can be equipped with those features using aftermarket kits, however it would probably require a custom installation. I recommend taking the vehicle...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...