Help Central locking issues!!!

[Novas1but74]

Hello all! I have a 03 Boxster base that I rescued with a blown engine (76,670 miles) about 3 yrs ago! Yes was the infamous IMS bearing culprit…….. Just recently swapped engine with same 2.7 and is running great and now working on other issues.…… car was in great condition! Person stated that only drivers heated seat and tail sensor not functioning where only issues prior to engine implosion.

Now current issues…… Both Key fobs don’t work (read several posts for ways to make work again to no avail). Key in door does not make passenger door/gas lock function. Was able to use friends Autologic machine to run through the “alarm” system functions and thought it might be the drivers door lock screwing things up with the sensor maybe being bad as showed 61 “center locking limit unlock position not reached” and 47 “central locking synchronization”. Could make passenger door lock function with autologic. So replaced drivers door lock hoping to cure issue, nope did not fix….. then had issues with hood release so changed switch, still did not work….. checked alarm module under drivers seat fuse was blown, changed and Walla manually locking and unlocking (with key) made passenger door/gas tank function! And could use switch in car to function locks! Though was on the right path…. So ran Autologic program again and still could not get alarm horn to function (never has worked when checking functioning)…. Ran out of 15 amp fuses as something is making the fuse blow….. I did open the circuit board (one under seat) and looks brand new still! No bad connections apparent nor does anything look burn or smell.

I have the Most radio which powers up and looks like functioning but no sound…… assuming this may be related or just issue as those radios are finicky at best. Already plan to send unit and amp back to Becker is not related to current issue (like the stock look)……

Would be greatly appreciated any insight or suggestions to fix my issues….. am thinking will have to take to stealership for dx and don’t have access to the right computer to figure this out…. Wish this site was easier to post pictures…… lol! Thanks in advance to everyone and again open to suggestions other than taking to stealership……

[junglegreen]

Good to know the alarm box is dry, finding it wet can lead to weeping and gnashing of teeth.

When does the fuse blow? Is there any correlation to the doors being locked?

Can you open / close the doors with the fuse not blowing? If so, do the windows move up/down as they should when closing / opening the doors?

Maybe try disconnecting the horn, if it is not working perhaps it is shorted causing the fuse to blow (a wild guess).

There are many connections / switches / motors tied to the alarm system. It will help if you can narrow it down. Are the two alarm codes still present?

[Novas1but74]

Originally Posted by junglegreen

Good to know the alarm box is dry, finding it wet can lead to weeping and gnashing of teeth.

When does the fuse blow? Is there any correlation to the doors being locked?

Can you open / close the doors with the fuse not blowing? If so, do the windows move up/down as they should when closing / opening the doors?

Maybe try disconnecting the horn, if it is not working perhaps it is shorted causing the fuse to blow (a wild guess).

There are many connections / switches / motors tied to the alarm system. It will help if you can narrow it down. Are the two alarm codes still present?

I only have Fridays to work on my car, with schedule permitting! Disconnecting my horn is the next attempt…… have never been able to locate the “alarm horn” as not next to battery like on my 2 earlier boxsters (01s and 99 base); reading other posts looks like 03&04 do not have alarm horns? I also did disconnect my passenger door in attempt to rule that out and still had fuse blow…… wondering if this could have anything to do with the ignition box everyone talks about that’s causing electrical gremlins ? Not sure if related but running out of ideas and have 6 more fuses to use (laughing but tired of buying fuses at this point)….. will update on Friday or Saturday after cked horn…

[Novas1but74]

Have disconnected the high/low horn and run the autologic command to make the alarm horn go off ……. And still blows the fuse in the CLU…. Ugg so frustrated….. still have codes 47 and 61 and both key fobs do not function…. Any additional help would be greatly appreciated! Thank in advance!!

[Novas1but74]

(Ugg this is my second time posting to this thread); I disconnected high/low horns under front bumper and made no difference when try to make the alarm horn sound through using Autologic program…… blew fuse yet again….. I still can’t find “alarm horn” on my 03……. It is not located next to battery like on either my 99 base or 01 S……. Open to suggestions as believe something is grounding out the system causing fuse to blow…… ugg!!

[Novas1but74]

Still no progress!!! Does anyone know if the box under the seat is specifically all that affects the key fobs?