DBJoe996

Ummm...hopefully after almost 8 years (auto-xr last post on December 20, 2010) he figured it out. 

Most of the connectors are "pinch and pull", although sometimes it takes more strength than you have in your hands to pinch the connector.  You have to really pinch the release surround while also pulling to disconnect.  Just from experience....

The issue isn't going to disappear just by clearing codes.  The codes are telling you something is wrong.  Spark plugs and coils are a maintenance item.  How long has it been since either have been replaced?  Cracked coils are common and will cause the problems you are having.  Get some new upgraded coils packs.

Been there -

Sunset has a very good reputation in my book.  I've always received what I ordered and no problems.  I would contact them directly because I'm sure they keep a record of orders/shipping and so on.  Have you ever heard of "it got lost in the mail?"  Or "it was shipped but never arrived?"

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Does it do the same thing both outside handle and inside handle?

Here is a link to door latch mechanism http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=996-99-05&section=804-00

Pelican Parts https://www.pelicanparts.com/More_Info/8N1837015C.htm?pn=8N1-837-015-C-OEM

Sunset Porsche (good price) https://www.sunsetporscheparts.com/auto-parts/1999/porsche/911/carrera-trim/3-4l-h6-gas-engine/body-cat/lock-and-hardware-scat

Also found thishttps://www.getporscheparts.com/oem-parts/porsche-lock-8n1837015c?c=Zz1ib2R5JnM9bG9jay1hbmQtaGFyZHdhcmUmYT1wb3JzY2hlJm89OTExJnk9MTk5OSZ0PWNhcnJlcmEmZT0zLTRsLWg2LWdhcw%3D%3D 

I would start by checking the transmission fluid level, or maybe doing a drain and refill, particularly if it has never been done. 

If you are headed in the direction of a rebuild or transmission, these guys are good  http://www.gboxweb.com/996reman.html

From memory, I have read that the VW part is not direct plug and play, and sometimes develops problems.  I know that the OE units are expensive at around $300.  But this is one case where I think going original is best.  What if you install a door latch mechanism and it doesn't work?  Worse case scenario you can't get back in the car or the microswitches in the latch mechanism don't function properly.  What exactly are the problems?

Check fuse C6 then check the flasher/turn signal relay.  After that it might get ugly because you may have to remove the cowling around the steering wheel to access the turn signal switch to see if it is operating correctly.

Durametric will clear the code for the Airbag light.  If you don't have it, maybe someone in your local PCA chapter has one.  Or a local indy.  Takes longer to hook it up than it takes to clear the code.

i would go with what Ahsai says.  No  one I know has more experience on the internals of the 996 911 except for maybe Jake at Flat Six.

https://www.vertexauto.com/porsche-cam-timing-tool-kit-996986-p-10905.aspx

maybe try this one from LN Engineering...covers your year https://www.partsgeek.com/gbproducts/SC/83-08026465.html?utm_content=SC&utm_term=1999-2005+Porsche+911+Intermediate+Shaft+Bearing+Tool+Set+LN+Engineering+10+0125+001+99-05+Porsche+Intermediate+Shaft+Bearing+Tool+Set+2000+2003&fp=pp&gbm=a&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Base&gclid=EAIaIQobChMI-fLv2Oi32gIVlC-BCh1_2QzVEAQYAyABEgIqS_D_BwE&ad=47433965052

https://www.pelicanparts.com/catalog/SuperCat/996J/POR_996J_ENGTOL_pg4.htm

Several kits available

Can't be absolutely sure, but the parts diagram shows only one part number for the C2 engine lid  http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=996-99-05&section=803-05

On the side you think it is coming from, jack up that side so the tire is off the ground, put the car in gear (engine OFF), then turn the wheel by hand back and forth.  If it is the CV joint, should be evident.

Take some string, maybe even some dental floss, and see if you can get it underneath, wrap a couple of times and pull on it while turning the screw.  You only need a little bit of effort/force to pull out on it.

Loren is right...just apply a bit of lift and the screw will back out (been there done that).  Do not try to drill it out, it will only spin.  BTW, it is just a plastic screw in an expansion bit, like a drywall anchor.  If really stuck and you are at the end of your tricks, put some vise grips on it and give it a good hard yank.

Well, you can do as you wish but it seems overkill to me.  There are built in drainage holes in the  door that drain out the water, but they can be plugged up with leaves and debris.  Maybe check those for debris next time you wash the car.  Also a good time to learn about all of the drainage holes, especially the ones in the frunk area and check them for debris.

Remove and clean the MAF sensor with MAF cleaner (since you will have the air filter box out anyway)

Remove and clean the entire TB

Remove the ICV (Idle Control Valve) from the TB and clean  it out with alcohol and q-tips, cycle it with a 9V battery to ensure smooth operation of the valve, it should not stick and should cycle smoothly, it should be shiny clean inside, not black (the is the usual culprit for "hunting idle"), as stated be very careful with the paper gasket, it is very fragile

Remove the TPS (throttle position sensor) and clean it up as necessary

Suggest replacing the TB O-ring upon reassembly

I would start by replacing the electrical part of the ignition switch.  Two screws, unplug and it is out.

Usually if it is plugs and/or coils it will start to throw misfire codes and the CEL will come on.  This sounds more like a bad DMF (dual mass flywheel)...or if it occurs when running at speed, the rear CV joints.

Not Porsche design fault.  Sorry to say but owner maintenance requirement.

Also suggest you  do this: http://www.ecudoctors.com/porsche-996-boxster-waterproof-immobilizer-case-enclosure.html

I understand your frustration and empathize.  Sometimes it helps to look at the parts diagram to see what you are dealing with.  Here is one of the carbon canister and apparently the one nut that holds it in...I think, but I've never been in there http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=996-99-05&section=201-20