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You will need a PST2 (old), PIWIS , or Durametric to test the various components of the top function. Many times it is a combination of failed sensors or microswitches and mechanical binding.

If you remove the radio there still might be a serial number label on the radio.

Thanks for the swift reply but unfortunately it's not working.. I assumed the final digit was a '3' as this last digit was not fully shown on the radio screen (see screenshot) I'm unsure how to proceed..

Hello everyone, new to the site here. I've owned my Guards Red 1999 Porsche 911 996 C2 for over 5 years and it has been a fun and pretty much uneventful ownership experience so far. I've only had a couple of minor issues that a local independent specialist took care of for me. However recently i ran into an issue with the top. After an evening drive the top would not go back up, there are no noises at all coming from any motors etc, handbrake on, frunk and engine cover closed, no clam shell movement. Tried several times and no dice. I suspected previously that I was losing hydraulic fluid (puddle of yellow liquid in front of rear tire) and was getting ready to remove the hydraulic arms to get the seals replaced when this happened. Initially i wasn't too bothered, the car was in the garage and I knew there was a manual method to raise the roof, so I left it for a couple of weeks. Fast forward to last weekend and I went to use the manual method to raise the roof. Discovered there was no Allen key behind the rear seat, so I used the correct sized Allen socket on a 3/8 ratchet with an extension. I was cautious and turned the ratchet slowly. After a few turns the clamshell started to open but right then the turning became very easy, the Allen key on the motor/gearbox side completely sheared off. So now I'm stuck, using the button to raise /lower does nothing. I've tried pulling on the part of the roof that I can see but it only lifts up approx 4-6 inches and then encounters resistance and I do not want to force it. My local independent guy is no longer in business. I tried a couple of other local Porsche specialists in the area but both of them said they did not take work on cabrios, one said they were too much hassle and the other that their expert on cabs had retired and they had no one to support. Yes, I could go to a dealer, but I'd prefer to avoid that. What I'm hoping is that somewhere in the collective knowledge of this group there is a way that I can get the roof up so I can access the hydraulic arms and get them fixed for a proper solution. Any ideas that you can share? many thanks in advance Blair G P.S. after searching around on this site in the 996 section, I've learned more about my car in the last hour than I did in the last 5 years!!

Thank you Loren I will give it a try .

Hi Pablo, Did you find out what the problem was? Grtz msschlck

Great, thanks for the info!

Did we ever find out why Fernando's 4S didn't start?

For the part time DIY user, the Durametric system is probably the best choice, it is a software based system that runs off any Windows based laptop and can do perhaps 85% of what the factory PIWIS system can do but without the $20,000 starting price tag of the PIWIS system. There are a lot of OBD II scan tools that claim to be Porsche specific, but we are yet to see one that really is or can even come close to the Durametric software. As for how to test, "search" is your friend. There are multiple threads and videos both on this website as well as others that can walk you thru the processes to evaluate your potential problems.

Try 5210

I had both my hydraulic rams revised because one of them was leaking. Top works like it should now but clamshell and side flaps not working. Clamshell only with the tool. I got myself the VAS 6154 and PIWIS III. When i try to run calibration it is starting to lower the windows for a second and then trowing the error Funktion inaktiv. Endlage nicht erreicht. Any idea why it would not complete the run?

That's a fair point @JFP in PA, thank-you. Off topic here, but can I ask if you have a recommended Porsche specific scan tool? Or point me to a thread where that is discussed?

Hi there please can someone assist with a radio code for a cdr 220 4462 15076269

It worked! Thank you so much!!

So has anyone figured this booger out?

Try 5048

I came across this old post in a Google search and thought I'd provide an update. The Porsche part number for the adjustable linkage is 986-424-931-06 and is available from Pelican Parts for about $250. Numeric Racing makes an all-metal version for $130. The adjustment procedure for the adjustable-length linkage is available in the Porsche OEM Service Manual.

Hi, I really need help getting the code for my radio. I have a 2001 Porsche Boxster. Can someone help me please. Thank you! CR-220 Ser: Y5024215 type 4362

U0404 - Software incompatibility with transmission control module - signal implausible. A U0404 code on a Porsche 997 indicates an issue with the Electronic Shift Module (ESM). Specifically, it means the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has received implausible data from the ESM. The ESM itself could be malfunctioning, sending incorrect data. The Transmission Control Module could also be the source of the problem, either by not processing the ESM's signal correctly or being faulty itself. Damaged wiring, loose connections, or corrosion in the wiring harness connected to the ESM can also cause communication errors. Some deeper diagnostics are going to be needed to decide how to proceed.............

Welcom to RennTech Before considering replacing ANYTHING, first do some diagnostics: Using a Porsche specific scan tool, check for any pending codes, check all four O2 sensors for function and voltage readings, check the MAF for voltage readings, and run A/F ratios; then and only then will you have the information about what, if anything, needs to be addressed.

Back in 2011 a previous owner of my 1999 Boxster replaced the bad 2.5 with a 2.7 from a 2001 Boxster. It appears to be a professional installation (or at least carefully done), and it has around 35,000 miles on it since then. The ECU has also been reprogrammed (by ECU doctors) for the 2.7. However, it smells like it is running rich and I fear will start fouling out spark plugs. I'm planning to replace the two upstream O2 sensors because those are responsible for controlling the air+fuel mixture. My question is whether I should buy O2 sensors for a 1999 Boxster with a 2.5, or a 2001 Boxster with a 2.7. I've checked a couple sources and the part numbers given for each are slightly different. What is community thinking on this?

That was it thank you so much!

Try 5435

Hello, I got a 2000 Carrera last year, and did a battery replacement. If someone can please help me with my radio code. See details below: CDR-220 Type 4462 ser: X5037070 Thank you!

TCM Problem, same as U0404 code, posted June 29 2017, to the T, same. Please help me fix this problem. Thanks Mike