Ignition Switch problems
 

I know this is a common problem with Porsche, but I am a new owner of a 2000 Boxster and during my first week of ownership the ignition switch would not allow me to turn the key. It would not even get to the first postion. Of course this happened with the top down and a rain storm coming at me fast. After 15 panic minutes of trying, it finally turned.

I am confused on the replacement. What i read is that all I need to do is replace the electical switch. The dealer say's i need to replace the whole switch mechanism, which looks like a gun, to fix my problem permanently.

Any advise before I pay over $500.00 to a dealer to have this done?

Yes, buy the $10 switch from ********************************e AZ and replace it yourself in about 30 min. Do a search, covered many times..........

[IMG]http://www.********************************************************************************************/images/product_images/images/WORLDPAC/W01331621815MEY.JPG[/IMG]

Just do the switch like JFP says. I replaced ours in less than an hour. It's a simple thing to do and it has been working fine for over 5 years now.

The dealer has to replace everything because they use an updated switch that does not work with the original system. If the dealer does it you may never have to replace the switch again, but at $10 a pop it will be pretty hard to reach the cost of the dealer over time.

Just something I thought I'd mention, and in no way meant to insult your intelligence, but I just wondered if you tried turning the wheel slightly during your attempts to see if it was just that the steering was locked? I know that I sometimes end up locking the steering if I use the wheel as a brace while stepping out of the vehicle, and if I forget that I did so unintentionally, I'll come back to the car and wonder for a few seconds why I can't turn the key. While your ignition switch probably could use a replacement just because, it'd be a few bucks saved if you find that the issue was something as simple as this. :)

For clarification, the switch has two fuctions, one is mechanical and one is electrical.

Typically, if you're experiencing weird electrical problems, then all you need to replace is the electrical portion of the switch (as shown in the previous posts). However, if you're having problems physically turning the switch, the entire "gun" assy may need to be replaced.

Ignore the dealer and start with replacing the electrical portion yourself since its easy and cheap. If that doesn't solve the problem then you may to replace the entire switch mechnical assy. You could still do this yourself and save the dealer labor but its a little more complicated than the electrical-only fix.

Hi Folks....I was having problems over the last week with my ignition as well...

Trouble getting the key in and out of the system (getting more difficult each time) and finally the engine would not even start, and all the lights in the display would flicker/light-up etc....

I just exchanged the ignition electrical switch (for 35$) and everything is back in perfect working order. Beware if you are told that the entire ignition (mechanical + electrical assembly) systems needs to be replaced. Given the small expense and level of effort in changing the part, there's absolutely no need to change the entire unit (and there's still potentially plenty of life remaining on the mechanical counterpart of the unit).

I simply followed Pedro's DIY procedure and it worked like a charm (thanks, Pedro!!):

http://www.pedrosgarage.com/Site_3/Replace_Ignition_Switch.html

Cheers,

Humberto-

997-Boxster, Gemballa Competition Corsa Wheels, Gemballa air intake scoops, Mulsanne bumper

If you are having trouble turning the switch it also could be only the little electrical portion also. sounds wierd but so. When my ignition switch went bad the turning of the switch was a problem and it didn't make sense that the part I was replacing could be the problem but it was.
Ken

Mine turns over but doesn't release causing interference with head light coming on and wipers so i manauly give it a quarter turn back after starting and all is well.

Do you think I'll have to replace electrical and mechanical?what kind of cost?

i guess this is the year of the ignition switch. just got home from a drive to dallas and my switch is going crazy. yesterday i took the key out (after quite a bit of coaxing) and the car thought it was still in.

guess ill be joining the "on my back" club.

Thanks to all
 

Thanks to all.

As a new user I really feel stupid, Overdrive was right. I locked the steering wheel and that is why the key would not turn. I have 2 other cars and both do not have locking wheels. Plus you don't put your hand on the wheel when you start the Porsche because of the key being on the left.

My Bad.

I bet your other cars have it too. It's been an anti-theft feature in cars for over 30 years that I know of. I'm always surprised to find when people don't know about the lock since it's so easy to get it to lock once the ignition is turned off.

Hey!
 

After getting my coolant system replaced...I joined another popular club for boxster owners.... The "bend over" club ;)

I posted this topic yesterday. It's buried in renntech 996 forums - DIY articles - carrera (996) - common fixes and repairs - thread Upgraded Ignition Switch/Lock Installation for 996/Boxster.

This particular DIY is detailed with many pics showing how to replace the steering lock. Anywway, here's my story of how I diagnosed and did a zero cost fix: ---

My recently acquired 97 boxster (40K miles) came with an ignition switch which was consistently notchy going from 0 to 1. A few times it would not budge. Jiggling the steering wheel and key became tiresome. Never saw any electronic misbehaviour.

First, I went under the dash and pulled the electric switch. Part number was 4A0 905 849 B and obviously had been replaced in the past.

With the electric switch disconnected the key still resisted going from 0 to 1, but only after the key was pulled out. If the key stayed in the tumbler there was no notchiness. I concluded that the steering lock disengagement was the culprit.

Next day I pulled the left side vent and instrument cluster to remove the steering lock. The instrument cluster took 10 minutes and fully exposed the work area - (hats off to those who succeeded thru the vent hole alone). Once the lock assembly was on the bench, why not take it apart before ordering a new one.

There is a square plate crimped in by the aluminum casting. It can be carefully pryed out to expose the steering lock disengagement cam.

With the tumbler and electric switch removed, using a screw driver to simulate the key and with one thumb standing in for the spring, I easily duplicated the original notchiness. Maybe it's no surprise with this mechanism's many rotational and longtudinal friction points, endless mechanical gyrations and tight tolerances.

I intended to remove the circlip from the tumbler end and strip out the locking plunger, thus leaving the car without steering lock. With encoded keys who needs the steering lock function?

However, laying down some molybdenum EP grease on the cam totally eliminated the notchiness. I then sprayed in some McLube (or use Jigaloo) and closed up the gizmo.

For now problem solved - cost zero. If it acts up again somewhere down the road, I'll pull the plunger.

ocoee,
I'm having just about the exact same problem...(2004 Box S)
Except none of the remote functions like trunk, frunk, and doors will not lock or unlock. This all started when the key got stuck...in the ignition. So I put a new battery in the key, and a new battery in the car since it was getting lazy....
Still no luck...So I bit the Bullet with the Porsche Dealer (Mobile Al.) and paid a $k and change for the whole ball of wax...My indy tells me that the ignition switch and the electrical functions are two separate things. The new stuff from Germany will be here next week. My indy is trying to get me in at the end of next week....

Tim

I know this is an old thread but I need to change my ignition switch. I've already bought the new version (the entire ignition assembly). Is this such a pain to replace the entire assembly that I should consider buying 4A0-905-849-B-M56 from our host and only replace the electrical part?

Yes. Follow the advice of Post #2. :cheers:

Thanks for the advice of this board but seeing as I already had the new ignition assembly, I decided to replace the entire ignition assembly. You have to remove the headlight switch, side panel, tumbler and instrument cluster (which is some work) but once you do that - it is a pretty straightforward effort. Took a couple of hours.

ignition switch
 

Could a faulty ignition switch cause the the car to cut off after running fine for 10 minutes?

Yes, but doubtful.
More likely the fuel pump relay, which is know to fail after running a bit and then working just fine again if you let your car sit and cool down.

I tried, but how does one get under the dash to change this switch out. you need to be VERY small.