Windows locks not working

[Porsche54321]

Originally Posted by piper6909

I had the same symptom when I bought mine. The problem was the immobilizer that had gotten wet when the previous owner had it.

Take out your immobilizer, open it up and check for any corrosion on the board.

It looks fine could it be the ignition switch ?

[piper6909]

Originally Posted by Porsche54321

It looks fine could it be the ignition switch ?

I guess it's possible, but in my case with the exact same symptoms it was the immobilizer.

You believe water infiltration caused it, how much water did you get in? Any puddling at all on the floor?

It's possible you got water on the immobilizer, but it hadn't corroded yet. If it got wet at all, it may still be wet under the relays where you can't see it.

If you suspect it got wet or damp at all, douse it with rubbing alcohol to displace the water and then let it dry out thoroughly.

[rexcramer]

You might consider talking with this company. They can rehab your unit. ecudoctors.com/pages/porsche

A faulty ignition switch can also cause several issues. https://www.pelicanparts.com/techarticles/Boxster_Tech/86-ELEC-Ignition_Switch/86-ELEC-Ignition_Switch.htm

Stay with it, don't give up and report back what you find.

[Porsche54321]

Originally Posted by rexcramer

You might consider talking with this company. They can rehab your unit. ecudoctors.com/pages/porsche

A faulty ignition switch can also cause several issues. https://www.pelicanparts.com/techarticles/Boxster_Tech/86-ELEC-Ignition_Switch/86-ELEC-Ignition_Switch.htm

Stay with it, don't give up and report back what you find.

If I end up using them, I will let you know how it went. From their site it sounds like it is not the ignition as there are no problems starting. The problems seem isolated to windows locks and radio

[Porsche54321]

Originally Posted by piper6909

I guess it's possible, but in my case with the exact same symptoms it was the immobilizer.

You believe water infiltration caused it, how much water did you get in? Any puddling at all on the floor?

It's possible you got water on the immobilizer, but it hadn't corroded yet. If it got wet at all, it may still be wet under the relays where you can't see it.

If you suspect it got wet or damp at all, douse it with rubbing alcohol to displace the water and then let it dry out thoroughly.

Thank you, I already took out the immobilizer, put it in alcohol, dried it out and cleaned the contacts as best I can.

I am Debating taking a heat gun to the microchip. I think this may melt the welds a bit to get a better contact.

I'm a bit worried it may make it worse, maybe the solder will just seperate from the various pins.

[piper6909]

Originally Posted by Porsche54321

Thank you, I already took out the immobilizer, put it in alcohol, dried it out and cleaned the contacts as best I can.

I am Debating taking a heat gun to the microchip. I think this may melt the welds a bit to get a better contact.

I'm a bit worried it may make it worse, maybe the solder will just seperate from the various pins.

It seems like you're pretty comfortable doing that, but I'd be very careful about using a heat gun on it.

I swapped the EEPROM from my damaged one into a replacement unit, but it's not for the feint of heart. There are so many tiny components nearby, and they can easily drift out of alignment from their pads.

I practiced many times on junk boards before I dove in.

To prevent the solder from separating, you can dab some flux on the pins. That should help keep the solder on the pins and pads.


Good luck.

[Porsche54321]

Originally Posted by piper6909

It seems like you're pretty comfortable doing that, but I'd be very careful about using a heat gun on it.

I swapped the EEPROM from my damaged one into a replacement unit, but it's not for the feint of heart. There are so many tiny components nearby, and they can easily drift out of alignment from their pads.

I practiced many times on junk boards before I dove in.

To prevent the solder from separating, you can dab some flux on the pins. That should help keep the solder on the pins and pads.


Good luck.

Hmm, how did you know the eeprom was the issue?
Maybe I can just try to apply the heat only to the eeprom with a soldering gun.

[piper6909]

Originally Posted by Porsche54321

Hmm, how did you know the eeprom was the issue?
Maybe I can just try to apply the heat only to the eeprom with a soldering gun.

In my case the eeprom was not the issue, it was the board itself. I took my eeprom from my bad board and put it onto a good board.

[particlewave]

Originally Posted by Porsche54321

Hmm, how did you know the eeprom was the issue?
Maybe I can just try to apply the heat only to the eeprom with a soldering gun.

Your immobilizer is faulty. The issue will be (at least partly) in the onboard relays and no amount of alcohol or heat will fix that.
No offense, but it sounds like you know just enough to really destroy your immobilizer. Please don’t use a heat gun on it.

You really should send it to a professional or replace the ECU, DME and transponder pill with a matched used set.