I have a 2005 Expedition EB that has developed a few issues possibly related to boosting another vehicle, at least there were no issues prior to that though they could be completely unrelated.
First I did try to search the forum but the search returned an error so I've decided to post instead.
Here are the issues:
1. Power door locks usually don't work, either from the door switches, the key fob or the access code on the drivers door. However they will work once the engine has been running for 10-15 seconds.
- When using the fob the puddle lights activate so I know the truck got the signal from the fob and it's not a dead key fob battery
- Battery voltage doesn't seem to have any effect on the issue
- If I unhook the both battery cables and short the negative to the positive to clear any memory from the modules, the issue goes away for a few days to a week.
2. Fuel gauge started showing lower than expected then went empty. Restarting the truck repeated the cycle for a few days, then it stopped working entirely. Once, out of the blue it worked for a day then quit again. This is probably unrelated to any other issue and is more than likely a fuel level sender issue. I'm only including it because it started at the same time and to be thorough.
3. When I turn off the vehicle sometimes the automatic headlights will click on, then off, then on, then off again.
4. The drivers seat easy entry system where the seat goes back when removing the key sometimes doesn't activate and I have reinsert the key and remove it a second time.
The alternator is putting out good voltage, the battery has been replaced recently and holds a charge well. The back wiper motor works perfectly and isn't drawing excess power trying to park.
Issues 3 and 4 make me think there is a problem with the ignition switch, but when issue 1 is also considered it makes me think there is something wrong with the security module. Though why a full reset resolves those issues has me at a total loss.
Where should I start? These are mostly just inconveniences I can live with so I don't want to throw a lot of money into getting it diagnosed, but if there are any easy fixes or ideas to try I would love to hear them.
Thanks
First I did try to search the forum but the search returned an error so I've decided to post instead.
Here are the issues:
1. Power door locks usually don't work, either from the door switches, the key fob or the access code on the drivers door. However they will work once the engine has been running for 10-15 seconds.
- When using the fob the puddle lights activate so I know the truck got the signal from the fob and it's not a dead key fob battery
- Battery voltage doesn't seem to have any effect on the issue
- If I unhook the both battery cables and short the negative to the positive to clear any memory from the modules, the issue goes away for a few days to a week.
2. Fuel gauge started showing lower than expected then went empty. Restarting the truck repeated the cycle for a few days, then it stopped working entirely. Once, out of the blue it worked for a day then quit again. This is probably unrelated to any other issue and is more than likely a fuel level sender issue. I'm only including it because it started at the same time and to be thorough.
3. When I turn off the vehicle sometimes the automatic headlights will click on, then off, then on, then off again.
4. The drivers seat easy entry system where the seat goes back when removing the key sometimes doesn't activate and I have reinsert the key and remove it a second time.
The alternator is putting out good voltage, the battery has been replaced recently and holds a charge well. The back wiper motor works perfectly and isn't drawing excess power trying to park.
Issues 3 and 4 make me think there is a problem with the ignition switch, but when issue 1 is also considered it makes me think there is something wrong with the security module. Though why a full reset resolves those issues has me at a total loss.
Where should I start? These are mostly just inconveniences I can live with so I don't want to throw a lot of money into getting it diagnosed, but if there are any easy fixes or ideas to try I would love to hear them.
Thanks