Cannot Disable Alarm
 

45 degrees, drove three miles downtown, parked, came back three hours later and the key fob would not open the lock. Used the key to open the door (which set off the alarm), got inside, there was a clicking sound and the alarm switch was blinking. Nothing I did would turn it off. The alarm went off when I opened the glove box to grab the manual and again when I opened the hood to see if I could pry the positive cable off of the battery (I could not). Walked home, grabbed the other fob (which I thought had new batteries?) drove the truck back and the second fob did nothing. The car door is unlocked.

Any suggestions?

Re: Cannot Disable Alarm
 

Pull fuse #9, under hood drivers side.

Re: Cannot Disable Alarm
 

I will try that in the morning.

What might be the cause?

Re: Cannot Disable Alarm
 

Has the alarm ever went off by itself, for no reason?

Re: Cannot Disable Alarm
 

Yes, a couple of years ago in my driveway on a Sunday morning...twice.

If I remove the fuse, I assume that the "anit-tow" feature will be disabled?

Re: Cannot Disable Alarm
 

Pulled #9 and the alarm would not stop until I put it back in place, and then it got louder for 30 seconds until it stopped.

Removed positive battery cable and alarm would not stop until I reinstalled it, and then it got louder for 30 seconds until it stopped.

Re: Cannot Disable Alarm
 

Found two other threads about this issue. One had the exact issues as mine and a temporary removal of the battery cable solved it. The other mentioned that the negative cable is to be removed first and also replaced first. I did that and also removed fuse, waited a couple of minutes and reattached the cables and drove the car home.

Removal of the #9 fuse apparently also disables the Roof Light, Horn, Anti-Theft Alarm, Liftgate Light and Tire Pressure Control

Other suggestions was to use a larger ground cable and possible SKREEM issue.

Re: Cannot Disable Alarm
 

It's starting to sound like the alarm itself, is starting to go bad. You can disconnect the alarm by removing the windshield wipers, then the cowl and unplug it. The batteries are known to go bad , then leak onto the control board , making them scream at inappropriate times..lol. I've never heard of one doing the things you say. When you pull fuse #9 the alarm should not sound off at all.

Re: Cannot Disable Alarm
 

Never would have guessed that the alarm had batteries.

Wonder why the fob's did not work?

Re: Cannot Disable Alarm
 

Have you checked the hatch area for water? You have to pull the foam in there, out. Are there any other symptoms or strange things going on , other than the FOB not unlocking/ locking the doors? Do the lights flash when you set the alarm?

Re: Cannot Disable Alarm
 

That would apply if he has a srt-6. Ive never heard of the regular xf's having their trunks flooded?

I know mine was setting off the alarm but since the siren had died it would just randomly flash lights on and off without the noise. I would still be able to unlock the car etc, until it killed the module in the trunk which I believe is for security and other stuff.

Either way my trunk had flooded due to the seal failing on the spoiler.

Re: Cannot Disable Alarm
 

The little drain hoses, under the spoiler can fail on the NA, also causing water to get into the hatch. Rim seal failure , loose hatch.. Im just covering bases.. :)

Re: Cannot Disable Alarm
 

No other issues on this 29,000 mile car.

The lights always flash when I unlock or lock the doors with the fob.

No leaks from the spoiler area that I know of.

I believe that I will attempt to remove the cowl and disconnect the alarm battery (no wonder the alarm went off with no positive cable attached to the main battery). I was wondering how to remove the wipers then I thought about using my faucet handle puller, which has a weight on a shaft that kind of thumps the handles off.

Re: Cannot Disable Alarm
 

You can usually just remove the nut and just rock the short arm with the wiper raised and they will release.

Re: Cannot Disable Alarm
 

Guess that I should have actually looked at the wiper before figuring out how to remove it! I figured it was pressed on.

Re: Cannot Disable Alarm
 

No, they are splined on a tapered shaft. Mark the wiper position on the windshield with masking tape before removal.

Re: Cannot Disable Alarm
 

Or you'll do it a couple of times...:rolleyes:

Re: Cannot Disable Alarm
 

Mark the position of the tip of the steel arm and not the rubber. Draw a U on the tape around the arm tip.

Re: Cannot Disable Alarm
 

The fibs will not work if the security module in the trunk is ruined by water and does not supply the vacuum or air pressure to open the locks or the fob batteries are dead.
If the alarm is going bad it can cause problems, so disconnect it.

Re: Cannot Disable Alarm
 

Finally removed the cowl and am not sure what to unplug.


I also noticed a reservoir on the drivers side that had water and other crude built up. I tried to unplug the drain line with a coat hanger but it only went in a couple of inches. Anyone know how to unplug it?



We had a torrential downpour on Wednesday of about 2" of rain in 45 minutes. The passenger floor is soaked and I have let the windows open for the last two days and nights which is not ideal.