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Possible immobilisor problem?


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OK so this forum has been recommended by Piston Heads members so I hope someone can help...

My Boxster has been garaged and not used for 2 weeks. I went to start it the other day and nothing! all electrics fine (seemingly) just nothing from the engine!

So i have trickle charged the battery, - nothing. I have tried to jump start using the hitech kit borrowed from my local garage - nothing. (battery showed 13v on the meter so seems ok.

It was suggested on the other forum that i disconnect the battery for 30 mins and then reconnect and try - i did this and the car started first time! So i drove it round for 20 mins then left it out front. As i locked it using the remote i did notice that a few seconds an unusual bleep came from it, a sound which i never heard before) 10 mins later. the car wont start again so i took a deep breath, disconnected the battery again for 30 mins and then it again started first time effortlessly.

This time i put it back in the garage and as soon as i turned off the engine, i went to restart it and .... nothing! (i had not even got out of the car)

so now it is sitting in the garage. and i am sitting here typing this and exasperated!

any assistance gratefully received.

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:welcome:

It also sounds like you have a bad battery. I would remove the battery and take it to AutoZone, PEP Boys or similar and have them load test the battery. If you have a way to check for any fault codes. Sometimes places like AutoZone will loan you a code reader. Although they typically only catch emission codes. Not a reliable as a Durametric or other Porsche specific reader. Fault Code 1602 indicates a bad battery.

What year of Boxster is it? Tip? S? 5 speed? It is helpful to include specs on future posts.

Welcome again and maybe someone else can chip in on immobilisor possibility.

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:welcome:

It also sounds like you have a bad battery. I would remove the battery and take it to AutoZone, PEP Boys or similar and have them load test the battery. If you have a way to check for any fault codes. Sometimes places like AutoZone will loan you a code reader. Although they typically only catch emission codes. Not a reliable as a Durametric or other Porsche specific reader. Fault Code 1602 indicates a bad battery.

What year of Boxster is it? Tip? S? 5 speed? It is helpful to include specs on future posts.

Welcome again and maybe someone else can chip in on immobilisor possibility.

Well i did think this about the battery but like i say when i disconnected the battery and reconnected after 30 mins it started first time.

it is when i turn off the engine it just wont start again unless i disconnect the battery again for 30 mins

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:welcome:

The system shuts down after 5 days of inactivity to save the battery.

Next time you can just lock and unlock the door using the metal key to reactivate the alarm/immobilizer system. (This info is actually in the owners manual).

Yep i am aware of this. Like i say (or maybe i didnt!) i have used the key in the door to reset it but, as soon as i turn the engine off it wont start again.

using the key to reset doesnt seem to do anything on this problem

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Well the car is now unlocked in the garage and wont start.

$ times I have disconnected the battery for 20mins, and then after the reconnection it starts first time with ease! but as soon as i turn off the engine it wont start again unless i disconnect the battery again for 20 mins!

useless!!

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