Hi chaps.
Just starting using my 06 CTTS after leaving it in the external garage for a couple of months and its developed a couple of faults I'd to seek a view on.
1) Red suspension alert comes on at some point in the drive. The car remains level. Code 1400 level control inactive.
2) More concerning is whilst you feel the transmission take up drive (or reverse) is that you don't move until revs have built up, then you suddenly lurch and off you go. Further drives throughout the day are absolutely fine.I kinda hoped this was a 'not used enough' gremlin, but I've driven it most days over the last week; hard at times, and its usually fine unless you miss a day. It was fine when I stopped driving it a couple of months ago. It did have a trans fluid and filter last year by a Porsche specialist.
Regards
Chrali

 

That's lurch sensation sounds like the hill holding feature where if the car is angled upwards, the brakes hold the car so when you move your foot from the brakes to the accelerator, it doesn't roll backwards. It will sit there until the gas overpowers the brakes, then kind of take off. If you drive in normal mode it makes it worse as the transmission starts in 2nd gear by default. Switch to sport mode and the transmission will start in 1st gear.

 

Battery.

How old is it?

What kind of maintenance charger did you have connected to it while it was in the garage?

 

#2 is a classic symptom of either a transmission that's under filled or a trans filter oring that was not seated correctly. Feels like no-drive, revs and then lurch.

 

Petza914 Not sure this is my issue, as this only happens the first time its used in a day.
wkearney99 I'd trickle charge it overnight 1 day a month and as I'm not spammed by lots of codes, I'd say the battery seems ok.
Brainz Yeah I was thinking about fluid level which may be affected by cold weather, not so sure of the O-ring, as for the last year the transmission has not had this issue.

Thanks for the replies.

 

That very much sounds like low fluid -- exactly what mine did in the mornings. In my case, the reason for the low fluid was a [self-inflicted] pinched o-ring on the trans filter -- it's very easy to seat the o-ring wrong when installing -- this results in low[er] suction when filling the trans which reduces the amount of fluid the trans sucks up while being filled. You can try to add fluid, but if it won't take more, then you likely need to investigate the filter which requires pulling the pan. It's a messy job, but not really difficult.

 

 

Interesting -- when I did the valve body fix, I noted that there were a bunch of tiny check valves in there. Seems very possible that a worn/faulty VB might allow some of the hydraulic circuits to bleed down and cause the same issue -- loss of drive/reverse until the circuits pump up.

 

My current take on my car's situation is that it isn't hurting anything nor is it a problem. I have altered my technique to let it idle in Park before driving off. My hope is that doing this will prevent any damage from fluid starvation.

Again, this only happens if the car has sat for >3-4 days or so. If it hasn't sat, I drive off without waiting. ...and when I forget it sorts itself within 15 seconds or so.

 

Yeah, I tend to agree on the fluid level. I guess it shouldn't be too bad a job if my iCarsoft tool shows the transmission temperature, so I can get it to 40 degrees, then just try and add some more until it drips out. In the meantime, I'll try waiting for 30 secs before shifting from park.

 

Do a Durametric Transmission Adaptation Reset:

In Durametric:
~ Go to Transmission
~ Go to Commands
~ Go to Adaptation Reset
~ Hit SEND one time only(there is NO confirmation)

Start and drive away slowly....

 

I'd love to but I don't have Durametric, I have iCarsoft POR v2, so I may look to get the ICarScan if the car doesn't need fluid.

 

ICarscan will do it and also read temp for fluid change/level setting.

 

Quick question, but I'm going to get a 500cc syringe to push some trans fluid in, but they usually seem to come with a 30cm/12inch hose. Is that long enough for this transmission, or should I get some longer hose?

 

Should be fine if you're doing it within 10 feet or so.. the fill point is right under the transmission in the pan. 12" will work fine, but the 500cc syringe will need refilling a number of times. An inexpensive hand oil pump would seem a more practical tool. There are ones made to fit 1 quart/liter bottles of oil.