Titou

Hello,
I took the ferry to England with my Boxster. I think the anti lift system went on when the boat was moving. When I came back to drive the car out of the ferry the remote control was not operating. I enter the car by putting the key in the door. I drove the car out to a petrol station and realised the petrol cap, front rear trunks and passager door were locked and no way to open them with the key.
I called my insurance brake down and a friendly guy came. He managed to open the petrol cap and front and rear trunks with the cables. Since that time the remote control is not operating anymore and my passager door remains looked. In the user manual it is explained that the alarm puts itself in emergency mode and there is no way to get out of that mode without visiting a Porsche Center.
Any help is welcome because my wife is tired of climbing in the car from the driver side.

Thanks

Titou

Macster

First any signs of moisture in the car? Cabin floor dry? Check under the seats. The alarm control module is under one of the seats (I think driver's side in USA cars, passenger's side in UK cars). Check along the door bottoms for any signs of moisture/dampness. The door membranes can fail and let water into the dry side of the door from the wet side and electrical gremlins with the windows, doors will arise. If not dealt with gremlins can appear in other areas of the car's elelctrical system.

While you are at it be sure the body water drains are clear and not accumulating water.

Couple of things you can try.

Consult the car's owner manual -- I admit I never have -- to see if there is any "trick" regarding inserting the key blade in the door and turning the key towards the lock (or unlock) position twice in rapid succession.

I have found that upon the rare occasion where it appears the key buttons no longer seem to have the desired effect that doing this appears to resync the key and the car's alarm/security system.

I'm not talking about cases where the car has just been parked long enough the car's security system shuts down and refuses to recognize the key button press but cases where I have just recently used the car and the key and car security system were working just fine then they weren't.

There is another thing you can try though I don't really think it will help but it is easy. Separate the key module housing and remove the battery and flip the battery around upside down and install and leave installed for a few moments. This resets the key's electronics circuit.

After a few moments remove the key and flip it right way 'round and install it and put the key module halves back together.

If the above doesn't help you can try disconnecting the car's battery. Consult the owner manual for the proper disconnect and connect procedure. Among other things you want to obtain the radio code to have this to resurrect the radio after you reconnect the battery.

This car battery disconnect performs a power reset of the car's electrical and electronic systems. The idea is (the hope is) the problem is just due to the system getting into a goofy state.

There are a couple of fuses that might be bad.

B8 (15A): Alarm control module, DME control module, TIP control module. Unlikely this fuse is bad but it does control power to the alarm control module (among other things) and pulling it effects a power reset to the alarm control module.

C3 (15A): Alarm Control Module, interior lights, power windows. This one is the most likely candidate especially if the interior lights/power windows do not work.

There could be a component failure somewhere in the car's security system. To deal with this requires equipment and tools and experience and training that a Porsche Center and its staff of technicians provides.

IOWs, you might just skip over all of the above and take the car in to a professional.

Titou

Thank you so much for your help I will try tomorrow the fuses. Somebody told me also about a blue fuse but I don't know we're it is thanks

Macster

Just a WAG but I recall from some source the alarm control module has a fuse located near it in its location under the driver (USA car) seat. Maybe this is the "blue fuse" being referred to?

You'll have to disconnect the battery -- follow the owner manual steps when disconnecting/connecting the battery -- and indentify which seat the security module is under. Then remove that seat to check for a fuse and if you find one check the fuse.

Titou

i manage to access the fuse and changed it but anytime the alarm goes on the fuse is burning. It is hard to have to remove the seat to change the fuse anytime the alarm goes on😂

Titou

is there any way to avoid the fuse to burn when the alarm goes on ?

Macster

The fuze burning (out?) is a sign of an electrical problem. A short more than likely.

The electrical wiring will have to be checked for a problem. A pinched wiring harness, possibly (just sayin') mice damage. Something.

You do *not* want to bypass the fuse as this risks serious damage to the electrical system teh security system, etc.

The fuse burning out is saving you a ton of money in collateral damage.

It is time I think you seek out a reputable/highly regarded Porsche shop and bring the car in for a professional tech's attention.

Titou

for the moment everything went back as before I try my best to avoid the alarm going on and îll keep it that way car electricians are really expensive here and can spend a lot of time until they find the origin of a problem. I went to a so called Porsche specialist and they said I should change the passenger lock for 350 gbp including labor when it only was a fuse thank you for your help and I ll take the tunnel back to uk so I can stay in the car avoiding to have the alarm going on because of the anti lift system. Poor design were you cannot decide to look the car without engaging alarm. I have a fiat coupe and there is a special key I can use to stop the alarm in the glove box. I do not understand why Porsche designed it that way or maybe yes i can understand having worked for a german company 3 years...