Help, faults with spoiler and tail lights won't turn off

[John Fondren]

Yesterday it rained bad and the floor board of my wife's 2005 Boxster had standing water. I immediately disconnected the battery and soaked up as much of the water as I could. The nose of the car was facing downhill, which didn't help. Today I was able to remove the driver seat and take out the alarm control module and dry it off completely. I reinstalled everything after it was dry but now I am getting a rear spoiler fault, as well as the rear trunk will not open. Oh and the reverse lights stay on after the car has been turned of and the key removed. Any suggestions as to how I can fix these issues? Thanks for any help.

[mike 101]

On 6/24/2013 at 7:29 PM, John Fondren said:

Yesterday it rained bad and the floor board of my wife's 2005 Boxster had standing water. I immediately disconnected the battery and soaked up as much of the water as I could. The nose of the car was facing downhill, which didn't help. Today I was able to remove the driver seat and take out the alarm control module and dry it off completely. I reinstalled everything after it was dry but now I am getting a rear spoiler fault, as well as the rear trunk will not open. Oh and the reverse lights stay on after the car has been turned of and the key removed. Any suggestions as to how I can fix these issues? Thanks for any help.

How did you get this fixed?  I have the same problem.

[wizard]

If you check your fuse diagram, I think you'll find that the spoiler and rear trunk are on the same fuse. That would be the first place to look.

[SpawnyWhippet]

It won't help the earlier posters, but this sounds like symptoms of water ingress into the Rear Control Module located under the drivers seat. I had precisely the same symptoms, a soaking wet carpet and the RCM was badly corroded. I replaced it and it fixed most of them immediately. A few more issues to resolve yet.

[Bobby Allan]

On 5/8/2019 at 8:07 PM, SpawnyWhippet said:

It won't help the earlier posters, but this sounds like symptoms of water ingress into the Rear Control Module located under the drivers seat. I had precisely the same symptoms, a soaking wet carpet and the RCM was badly corroded. I replaced it and it fixed most of them immediately. A few more issues to resolve yet.

 

I had same problem, had water under the passenger seat, rear control module submerged, replaced module, alarm now ok, lights all off, and normal, boot and bonnets now open by the electronic buttons, but have the spoiler stuck in the up position, and the roof does not open, no motor sounds at all.  Do you have to program the rear control module? or have I missed another fault? I have checked all fuses micro switches, and relays all appear fine. what programmer do I need if this is the case. 

[SpawnyWhippet]

5 hours ago, Bobby Allan said:

 

I had same problem, had water under the passenger seat, rear control module submerged, replaced module, alarm now ok, lights all off, and normal, boot and bonnets now open by the electronic buttons, but have the spoiler stuck in the up position, and the roof does not open, no motor sounds at all.  Do you have to program the rear control module? or have I missed another fault? I have checked all fuses micro switches, and relays all appear fine. what programmer do I need if this is the case. 

 

I found faults in the relays above the fuse box. They clicked when activated but passed no current. Replaced them and the roof and spoiler started working again. Also one of the fuses was bad. I reprogrammed the rear control module to match the options in my car using Durametric.