AlanBobTM
Junior Member
My recently acquired 2004 Ram 3500 ST Quad Cab has some electrical anomalies. Here's one that has me baffled.
The power door locks lock about 5 seconds after turning the ignition switch to On or Accessory.
They unlock immediately after turning the ignition switch to Off.
The electric lock buttons on both front doors do not work at all. (All other switches on the doors work correctly: windows, mirrors.)
Key fob locks and unlocks doors as expected, except that pressing unlock button once unlocks all doors, not just Driver side.
Unlocking the Drivers door manually unlocks only that door. Second turn of key does nothing, does not unlock other doors as expected.
Manual locks all work properly. All actuators work.
This is not the expected behavior of the doors in automatic mode locking once the vehicle speed has reached 35 mph. Trying to turn the function on or off using the 'key on/off 4 times then operate driver door lock switch, beeps to confirm' method has no effect. No confirmation beep, no change in function.
Truck came with a Bully Dog GT Diesel tuner, which also has an automatic door lock function. Enabling or disabling this function had no effect. I restored the truck to Stock mode with the Bully Dog and removed it completely. No change.
There are no DTCs.
This has me stumped because it's a consistent behavior that seems intentional. Possible other factors are:
1. The ignition key can be removed in any position. It's the same with an old unused key so it appears to be wear in the lock mechanism. Could the lock problem be caused by the ignition switch? It doesn't do anything else that's weird.
2. There is an aftermarket Rostra Cruise Control installed that isn't working. I disconnected the control module wiring, no effect.
3. Here's a fun observation: I removed fuse #22, ostensibly feeding the power door locks, and guess what? They still worked as previously described.
Does anyone have any insight into what might be causing this? The electrics on this truck are a bit more complicated than those on my 1960 Morris Minor LCV Van...
Thanks in advance,
The power door locks lock about 5 seconds after turning the ignition switch to On or Accessory.
They unlock immediately after turning the ignition switch to Off.
The electric lock buttons on both front doors do not work at all. (All other switches on the doors work correctly: windows, mirrors.)
Key fob locks and unlocks doors as expected, except that pressing unlock button once unlocks all doors, not just Driver side.
Unlocking the Drivers door manually unlocks only that door. Second turn of key does nothing, does not unlock other doors as expected.
Manual locks all work properly. All actuators work.
This is not the expected behavior of the doors in automatic mode locking once the vehicle speed has reached 35 mph. Trying to turn the function on or off using the 'key on/off 4 times then operate driver door lock switch, beeps to confirm' method has no effect. No confirmation beep, no change in function.
Truck came with a Bully Dog GT Diesel tuner, which also has an automatic door lock function. Enabling or disabling this function had no effect. I restored the truck to Stock mode with the Bully Dog and removed it completely. No change.
There are no DTCs.
This has me stumped because it's a consistent behavior that seems intentional. Possible other factors are:
1. The ignition key can be removed in any position. It's the same with an old unused key so it appears to be wear in the lock mechanism. Could the lock problem be caused by the ignition switch? It doesn't do anything else that's weird.
2. There is an aftermarket Rostra Cruise Control installed that isn't working. I disconnected the control module wiring, no effect.
3. Here's a fun observation: I removed fuse #22, ostensibly feeding the power door locks, and guess what? They still worked as previously described.
Does anyone have any insight into what might be causing this? The electrics on this truck are a bit more complicated than those on my 1960 Morris Minor LCV Van...
Thanks in advance,
