Nightmare for me and neighbours...
Discussion
I left my car standing for two weeks without trickle charger on and surprise surprise (my fault I know) battery was dead.
I used a battery pack to open bonnet and attached my trickle charger. This is where it all went ‘exorcist’ on me. All lights and relays were clicking and flashing (albeit dimly) and wouldn’t stop. The window dropped but when I shut door all hell broke loose and I couldn’t shut the alarm up.
I have managed to stop it (or perhaps battery ran out of juice again), by putting cover back on, but I am really stuck as to know what to do next. If I attach charger again the neighbours will probably kill me, but I need the car for tomorrow.
Any ideas?!
I used a battery pack to open bonnet and attached my trickle charger. This is where it all went ‘exorcist’ on me. All lights and relays were clicking and flashing (albeit dimly) and wouldn’t stop. The window dropped but when I shut door all hell broke loose and I couldn’t shut the alarm up.
I have managed to stop it (or perhaps battery ran out of juice again), by putting cover back on, but I am really stuck as to know what to do next. If I attach charger again the neighbours will probably kill me, but I need the car for tomorrow.
Any ideas?!
This happened to me once, battery was dead and couldn’t be charged up again. I called the RAC up, they carry new batteries with them which you can purchase and they fit it, problem solved. They also did proper diagnostic tests so they confirmed the alternator was ok, there wasn’t any significant current drain with the ignition off, and confirmed the battery wouldn’t hold charge. I suspect most breakdown service providers would be able to do the same for you
[quote=BertBert]Disconnect the battery, charge it, reconnect?[/quota
Did a bit of research and it seems disconnecting battery is okay as sensors sort themselves out.
However, if I disconnect the battery the alarm will go off as it thinks it’s being disarmed. I read that putting key in ignition solves this, but with a dead battery the ignition ‘eats’ the key anyway?!
Is it safe to jumpstart these with a portable battery pack?
Did a bit of research and it seems disconnecting battery is okay as sensors sort themselves out.
However, if I disconnect the battery the alarm will go off as it thinks it’s being disarmed. I read that putting key in ignition solves this, but with a dead battery the ignition ‘eats’ the key anyway?!
Is it safe to jumpstart these with a portable battery pack?
Back late tonight, so just went out to car after advice from local battery place. I disconnected negative after using fuse box thing to pop bonnet, attached CTEK 5.0 and crossed fingers.
This time, no siren, no ‘exorcist’ lights and charger doing its thing. In fact, the Porsche tech said 997’s don’t sound siren if you disconnect battery, time will tell.....
I can’t put key on barrel as ignition swallows key (lucky for me I keep the sore and valet key to hand) so car is locked, battery will be on charge for a few days and will see what happens.
The reality is that I will probably need a new battery, but as this is the first time it’s gone flat it’s worth a go to see if I can stir it back into life!
If not I think Bosch s5 seems to be the preferred choice and can be had for £90 inc vat only from some battery superstore place.
I am nervous about the siren going off in middle of night though when a bit of juice comes back......
This time, no siren, no ‘exorcist’ lights and charger doing its thing. In fact, the Porsche tech said 997’s don’t sound siren if you disconnect battery, time will tell.....
I can’t put key on barrel as ignition swallows key (lucky for me I keep the sore and valet key to hand) so car is locked, battery will be on charge for a few days and will see what happens.
The reality is that I will probably need a new battery, but as this is the first time it’s gone flat it’s worth a go to see if I can stir it back into life!
If not I think Bosch s5 seems to be the preferred choice and can be had for £90 inc vat only from some battery superstore place.
I am nervous about the siren going off in middle of night though when a bit of juice comes back......
You CAN remove the key from the ignition when the battery is dead. Pull open the fuse box, inside you will find a thin metal rod. On the ignition ring there is a small plastic flap (best use a flaslight to find it) which can be pulled off. Reveals a small hole into which to insert rod which will release "stuck" key. IIRC details in instruction manual.
All the above sounds, err... a bit "graphic"?
Btw, if the battery is a goner just get a new one, don't risk other weird electrical gremlins.
Btw 2, once you're back up and running you'll get PASM and PSM failure notices. Just drive a few meters and these should cancel out. Also, no need to reset PCM clock as it sets itself.
RiccardoG said:
You CAN remove the key from the ignition when the battery is dead. Pull open the fuse box, inside you will find a thin metal rod. On the ignition ring there is a small plastic flap (best use a flaslight to find it) which can be pulled off. Reveals a small hole into which to insert rod which will release "stuck" key. IIRC details in instruction manual.
All the above sounds, err... a bit "graphic"?
Btw, if the battery is a goner just get a new one, don't risk other weird electrical gremlins.
Btw 2, once you're back up and running you'll get PASM and PSM failure notices. Just drive a few meters and these should cancel out. Also, no need to reset PCM clock as it sets itself.
Worth a go to see if battery can be bought back to life. If it goes flat again after a day or two I will get a new one.All the above sounds, err... a bit "graphic"?
Btw, if the battery is a goner just get a new one, don't risk other weird electrical gremlins.
Btw 2, once you're back up and running you'll get PASM and PSM failure notices. Just drive a few meters and these should cancel out. Also, no need to reset PCM clock as it sets itself.
lingus75 said:
This time, no siren, no ‘exorcist’ lights and charger doing its thing. In fact, the Porsche tech said 997’s don’t sound siren if you disconnect battery, time will tell.....
That's correct. It was the 9x6 models that needed the key in ignition when disconnecting the battery . I recently changed the battery on my 987 without alarm issues. If I were you I would just change the battery as it sounds like even if the old one charges up it won't hold the charge for long.lingus75 said:
The reality is that I will probably need a new battery, but as this is the first time it’s gone flat it’s worth a go to see if I can stir it back into life!
RiccardoG said:
Btw, if the battery is a goner just get a new one, don't risk other weird electrical gremlins.
Once they 'gone' they're pretty temperamental.I had battery problems on two LR Discoveries; no alternator issue, no 'low battery' warning, just total, complete failure to start. One of the firms on our industrial estate is an OEM battery warehouse and their advice was that even if the battery charges up, it needs replacing.
Unless the battery is getting charged up properly by long journeys, or is on a battery conditioner, they only ever last a few years IME.
Digga said:
Once they 'gone' they're pretty temperamental.
I had battery problems on two LR Discoveries; no alternator issue, no 'low battery' warning, just total, complete failure to start. One of the firms on our industrial estate is an OEM battery warehouse and their advice was that even if the battery charges up, it needs replacing.
Unless the battery is getting charged up properly by long journeys, or is on a battery conditioner, they only ever last a few years IME.
All charged up now, so will take of the Ctek in the morning and see how it goes. Round and round the village a few times then leave for a few days, and see what happens. Most of the online places deliver next day so not too much of a hassle. I had battery problems on two LR Discoveries; no alternator issue, no 'low battery' warning, just total, complete failure to start. One of the firms on our industrial estate is an OEM battery warehouse and their advice was that even if the battery charges up, it needs replacing.
Unless the battery is getting charged up properly by long journeys, or is on a battery conditioner, they only ever last a few years IME.
Gassing Station | 911/Carrera GT | Top of Page | What's New | My Stuff