OMG what did I DO?

I barely drive my 987 because i love to look at it and don't want to put miles on it. I would just come come by once a week or so and sit with it and stare at it for a few minutes and walk away. i had to move fro NY to NJ. battery is dead so i get a new battery . i am not paying attention and i put the battery on backwards and the spark kills my radio. ok whatever. i'll get a new fuse in there eventually. everythign is fine except the radio. I decide that because i never really drive it let me keep it on a battery tender permanently so that my battery doesn't die again. still no problems. today i get my NJ inspection everything is great. i get home i'm like well maybe i will check to see if there is a radio fuse in the footwell panel and then use my foxwell nt530 to "reset the battery ". not sure what or why but i couldnt' reset the battery , because the nt30 doesn't have that option. fine. then i'm like let me make sure that the all the fuses are in good standing. and i check that fuses are all in order and not broken. i start the car and now i have a "system fault" with a lightning bolt screen i also have a check engine light i also have "failure spoiler control" PSM problem abs problem brake light problem my shifter won't release the shifter from park to anything else unless i press the button before i start the car. I drove the car down the street to see if the lights would go away. nothing. the digital speedometer isn't reading. What did i do and what should i do? this is 100% electrical. has to be. i know that the radio might have a fuse on the back of the head unit. I'll deal with that after i go back to normal after fixing all this drama. now. I did have a few fuses missing according the the diagram i filled them from the reserve stash at the top of the fuse fox. didn't need to but i did it anyway. i couldn't tell you what i did. it was 4 of them. either way.

Oh my. This made me very sad: - to me means it might be time to seek professional help. There is a possible lack of troubleshooting logic to the statement: Since the car was running OK before you connected the battery in reverse (it's happened to other people..) without those fuses, why would them being missing be an issue unless someone stole the fuses from your fusebox? A point of info - the 987 - .2 or .1 does not have a battery registration. That's why your Foxwell NT530 couldn't do it - there was nothing there to do. It would be useful if you knew which fuses you put in that weren't there originally - luckily there is a way to determine that. Pull out each fuse and look at where it plugs into. Is there a silver colored contact in both holes? If yes - that fuse should be there. If no and there is only one contact - that fuse is doing nothing and is one of the 4 you installed. I can't say what happened causing the bizarre behavior - but there is a chance that doing a "Vehicle Handover" might take things back to normal. That's supposed to program each control module in the car to the original settings it left the factory with. I've managed to make a 2011 Cayenne do very weird things (one mirror folding out, one mirror folding in sort of stuff) and the only way I found to clear all the errors and weirdness was using my NT710 and doing a vehicle-handover. I screwed it up using a PIWIS-III that was new to me if that counts as an excuse. - how did you do this when you can't get the shifter out of park with the key in? Normally the car won't let you use the starter unless the car is in neutral or park.. We need a bit of info - the year and configuration of your 987. Automatic/PDK? Engine? Where are you and the car located in NJ? Perhaps one of us with a bit more experience could come and help. I believe something happened during your programming experiment with the NT530 that caused the problems you now see.

So it ran fine. Until I touched the fuses and decided to plug the the foxwell to reset battery . So either the foxwell messed it up or the fuses did. What else can I do bulk pull extra fuses?

The additional fuses you added have nothing to do with your problem. They are in unused fuse positions in the fuse box. Those positions are for options your car doesn't have, or for electronics the 997 has and the 987 doesn't (they share things like the fuse box). Since these are unused - one side of the fuse socket doesn't have an electrical connector - so adding a fuse doesn't change a thing. It just might add to confusion in the future when you're trying to track down what fuse has blown. Not knowing what you did with the Foxwell - I can't say with any certainty if you boluxed something up.. but it sounds like it, hence my suggestion of performing a "Handover" reset on the car, which should restore all the programmable modules in the car to the state they were in when the car left the factory. I've had to do this a few times when I was experimenting with a PIWIS-III (for the good of the forum, and my advice - don't bother with a PIWIS , get the Foxwell NT710 , it can program - and screw up things - just as easily as the PIWIS , but it makes it easier to recover from the disaster with the "handover" function being available.) You haven't answered my question about where in NJ you live - so I have to assume you don't want any help with your problem.

happy to get any help. South amboy NJ.

Did you try taking negative off battery for 30 minutes And reconnecting?

Just the native? No

Taking off either connection to a battery opens the closed circuit, but it is inherently safer to disconnect the negative terminal. Once disconnected, it is as if the battery is removed from the vehicles circuitry.

It was nice visiting (too briefly, but I caught heck from my wife anyway..) and sorry we didn't get further along in diagnostics. I usually like to see the problem, get all the data I can about the problem, then let it sit and percolate a bit through my brain.. sometimes something good pops to the surface. Things I noticed: This isn't the first time you've had top problems? https://www.planet-9.com/threads/po.../post-pandemic-blues-roof-drama-06-boxster.252000/?post_id=2200946#post-2200946 - that would have been useful to know. I didn't see a resolution about this problem posted - what did you do with what results about the top? I assume there wasn't a spoiler problem at that time? Every module reporting errors includes a PSM communications error code. That's probably because the PSM module isn't talking to us. Those other modules need info from the PSM module (usually vehicle speed - which we know isn't functioning on your car) - so they error out when they don't get that info. I also remembered where the PSM module is located - it's the electronics part of the ABS/PSM brake controller. It attaches to the modulating hydraulic controls, and has electromagnets that move the positions of the valves in the hydraulic system (a simple explaination..) The good news - there are a number of places that rebuild these puppies when they go nubs up.. so maybe it doesn't involve getting a new one and having to program it to the car.. if it can be repaired, the programming is normally retained. There is a function in the Foxwell to read the programming and save it for reloading to a new module, but since even the Foxwell can't communicate with the PSM module, that's not an option. As we discussed a bit - the extra fuses you installed will make no difference to the car - theres nothing on the other side of those circuits. Don't get distracted by those. What I did suggest, and I think is worth doing - remove the primative headunit (stock non-PCM CD-3?) which isn't functioning at all and appears to be getting no power - and disconnect the wires to it, and put it away on a workbench. We'll tackle that when the rest of the car is running OK. Once you get the radio out - disconnecting the negative terminal from the battery, leaving it off for 10 minutes, then reinstalling it - won't hurt anything, and might help (although I doubt it, it's easy and costs nothing to try.) I went to AllDataDIY to try to find where one might locate the PSM module, but AllData is acting flaky - so I can't confirm where it is using that route. Lets see if a Google turns it up.. hang on.. Interestingly enough - I found: https://www.planet-9.com/threads/psm-failure-message-at-ignition.255223/ - which discusses the YAW sensor (part of the PSM system). I mistakenly noted at that time that the PSM/ABS module was not part of the ABS/PSM hydraulic control - wrong. It is.. so it's under the frunk you go. One thing that might be useful is to talk to a place that repairs these modules. The one I've heard good things about: Module Master - Module Rebuilds done right. - but they don't list this module. I think it's worth calling to talk to them - it's possible they do repair it (It might be used on other vehicles) - but don't have it on their website. There are these people: https://www.aesmodules.com/porsche-repair - again - I think worth calling. And: Repair & Return | XeMODeX Inc. I also think - if it was my 987 - I'd be calling some junkyards (there is one foreign car one not far from you in South River - Josephsons) and seeing if they have a 987.1 module available. eBay is another possible source. Porsche 2006 Boxster Abs Module for sale | eBay - lots of complete units for small money. I think it would be worth a try.. there are possibly security screws holding the module to the hydraulic control part - I have those - contact me if you need help.