987 wont start after pulling the security box under seat

[2013grandsport]

So the wife dropped a valuable piece of jewelry under the driver seat and I pulled the seat and the box under it out to get to it... Well after putting everything back together the car will not turn the engine over to start... what do I need to do? Have the system reset by a mechanic? Or is the only one that can reset it be the dealer?

[Jamesp]

Check your work. Make sure the connections are intalled correctly. I have not taken that box out but it would be surprising if disconnecting it would be different than disconnecting the battery. Others who know more than I might have a different answer and I'm sure they will weigh in if they have additional information.

[2013grandsport]

I have been told twice now to double check my connections but if I recall the three pigtails can only go in one way?

[thstone]

I remove the immobilizer fairly often.

Sorry to say this again, but check that the connectors are firmly seated. If still no go, then pull off the connectors and look for bent pins.

The wire harness is fairly short and its easy to pull it out when re-installing everything. And yes, while it can only go in one way, I was able to bend a pin once and even though the connector was seated, the bent pin kept the car from starting.

You may want to pull the seat again to get it all working without having to work in the limited space under the seat.

[Gilles]

Originally Posted by thstone

. And yes, while it can only go in one way, I was able to bend a pin once and even though the connector was seated, the bent pin kept the car from starting. .

+ 1

I went nuts trying to find the cause for an engine that would start backfiring as soon as you touch the gas pedal and dying after installing the OEM throttle body.

The fault was a bent pin inside the connector, I was able to bend it back without breaking it (they seem kind of fragile), be gentle and proceed with care.

Good luck!

[2013grandsport]

I will probably end up doing that. So can anyone confirm that unplugging this box and plugging it back in a few days later would or would not keep it from starting?

[jdraupp]

Originally Posted by 2013grandsport

I will probably end up doing that. So can anyone confirm that unplugging this box and plugging it back in a few days later would or would not keep it from starting?

Something is not correctly plugged in. That's the only reason why doing what you did would cause the car not to start.

[particlewave]

Be sure to disconnect the battery before unplugging/seating connectors.

[jaykay]

I have had this apart completely....and reassembled in a water proof case.....I would think that as others have said you have a connection or a break in a wire. The plugs only go in one way and lock down....make sure that that is working as well not having undue tension on the harness

[Sassmatt72]

When I did the water proof security system case (A mush have if you ask me)...

They are specific as the order of plug removal.

BUT.
I believe, if you, at this point...
- pull the battery.
- ground both terminals together (no battery in car!)
-pull box in (black ? plug first)
- find bent or---
lower pin!!!! look carefully that a pin is not lowered, or if the female part has slid backward in the plastic, OR there can be corrosion in the assemblies that was previously here but not effecting the electrical connection, untill now...
(very rare in Porsche plugs, but..., not bent but slid away from connection point.)
-reassemble.
-check fuse.
-put battery in ( red first, key off doors closed,, then black).

if still wonky... maybe computer access can tell quickly if fried or just a re-inzialiation process.


Good luck.

I"ve had mine out a few times with changing results. ( very confusing).
But sorted now

[2013grandsport]

ill pull it apart friday... have to get the trunk open to even charge the battery which is now dead. let u guys know what happens

[jdraupp]

Originally Posted by 2013grandsport

ill pull it apart friday... have to get the trunk open to even charge the battery which is now dead. let u guys know what happens

Just tell your wife the car is broken and you need a new one. Since it's all her fault she has to be ok with it. Then order one of the new boxster spyders. You're welcome.

[Steve Tinker]

You could have 2 problems:

1) The ignition switch (on another post you say the key is difficult to remove).

2)Doesn't the immobiliser have its own fuse?? Did you inspect / test it when you checked the connections?

[diveboxster]

can someone tell me if the immobilizer connectors are part , of the rear engine harness and can you bypass the immoblizer all together? water damage in a inherated car.

[Qmulus]

Originally Posted by diveboxster

can someone tell me if the immobilizer connectors are part , of the rear engine harness and can you bypass the immoblizer all together? water damage in a inherated car.

I assume that you are now talking about a 986? Regardless, the immobilizer/alarm module wiring is part of the main body harness.

No, you cannot bypass it.

Water damaged immobilizer/alarm modules can be repaired. BTDT quite a few times now. Worst case, it can be replaced.

PM if you need info.

[thstone]

Originally Posted by diveboxster

can someone tell me if the immobilizer connectors are part , of the rear engine harness and can you bypass the immoblizer all together? water damage in a inherated car.

The immobilizer, key fob transmitter (looks like a little pill), and ECU are all programmed as a set with a unique security code. If any one of those three components isn't working or communicating, the car won't start. If you replace any one of the three components, it has to be re-programmed to match the other two. Only a dealer or a shop with Porsche-specific diagnostic test equipment can do the re-programming (and they will likely check the VIN to make sure that the car isn't stolen). The enthusiast favorite, Durametric test cable, does not have this capability.

Used matched sets (immob, key fob, and ECU) can be found on eBay if you want to replace the entire set instead of having the immob repaired.

Remember, the whole point of the immobilizer is to keep the car from being stolen. If it could be simply bypassed, it wouldn't be a very effective security device.

[john12312]

You may have damaged an electrical component when you pulled the module without disconnecting the battery first. The connectors were a little tricky to get them back on so recheck to make sure they are seated properly and nothing bent. If you need the module tested, check with Qmulus as he fixed my module at a fraction of the cost to get a new one. See my previous thread.
http://986forum.com/forums/performance-technical-chat/64511-power-windows-not-working-after-wet-electronic-immobilzer.html