Hi all, today the most estrange thing happen to my 97 XK8. The car was parked in the garage. All of a sudden the horn started honking, lights and wipers on, tried to override with the key and fob to no avail until finally battery exhausted. The car is not used frequently. Any ideas???

 

Saludos Felipe! Espero que te encuentres bien! Me pasó algo similar con mi ‘04.

Jump start it, then check to see if any doors show up as open when they are shut. In my case, the passenger door was showing open and it was activating the alarm. It was the door latch microswitch.

Si te resulta que es eso, es una reparación sencilla. Me avisas y te digo donde puedes conseguir un reemplazo y las instrucciones para efectuarlo.

 

Saludos Giandaniel, thanks for your suggestion. I'll be not able to work on it today but will try in the morning, will let you know how it goes, thanks.

 

Battery! When its going you have all sorts of weird symptoms. I found that out first hand.

 

Agree with frankc about the battery. But, something similar happened to me once when I stuffed the key fob in my pocket with a bunch of other things and the alarm and lights started going off. I guess the buttons got pushed accidentally.

 

That was my first thought too - especially if the car isn't used much. Do you keep it on a battery tender?

 

 

I'm glad it was an easy fix Felipe!

 

Thats the thing about these forums we are 4034 miles apart yet I was able to pass on my thoughts, along with others of course, and help you solve your problem. Its happened more than once or twice in reverse too. The world if definitely getting smaller!
Glad you sorted it in the end.

 

Battery, once it gets too low around low 11 volts it wakes up the car then starts all kinds of issues with modules like wiper, alarm etc. Replace the battery and keep it on a trickle/float charger so it has full power all the time

 

WTF!!! Did it again today!!! With the new battery!!! Disconnected the battery, did a hard reset, connected it again and continue to happen. Now the battery is disconnected, if I connect it again happens again, started the engine and runs rough, with the honking, wipers and lights on, and the top trying to open, no codes, any ideas???

 

You may have a permanent drain that is running the new battery down and doing the same. You need a dvom meter to monitor the battery and any battery drains. Im sure there are how to's in the tech section or somewhere around here. Thats were i would start at this point to verify

 

ECU problem? It's a 97.

 

Ok, connected the battery again a few minutes ago and everything was perfect again??? Started the car, engine running smooth as always, lights, wipers, a/c, top, windows, radio, everything working as it should. WTF??? Driving me crazy!!!

 

Id bet a bar of chocolate that its a bad earth. Remove all your connections. Glass paper them put them back on tight. Dont forget the Earth Strap under the car. Just follow the major connection from the battery and remove, clean, and refix tight. Probably explains it appeared fixed when you replaced the battery, which I still think was a good move.

I once had an embarrassing incident with this. When I put my foot on the brake the horn blew. I got some dirty looks in traffic lines.

 

 

Not surprised it's crying out for attention. It's LONELY sitting in the garage.

Graham