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Help cayenne turbo won't start says in reverse on dash

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Help had to flat bed my cayenne last night

Issue as below

1. Cannot start the car

2.display says R

3. Reverse lights are on

4. Backup camera on

5.gear change can be moved doesn't change the display from R

6car is in neutral, how can I teenage gearbox after manually releasing under the gear nob following instructions in Porsche manual


1. New battery

2. Read the codes as attached tried to clear no success they indicated something Else think due to the aftermarket kenwood

3 took apart and cleaned gear selector magnets are in place cleaned circuit board no bent pins

My thoughts

1. Can it be the brake switch looks like it's a 10$ part ?

2. I was going the take out and switch the gear box selector with gear knob ?

3. How can I check if the gear selector cable is still impacted

4 freaking out

Help any assistance pictures attached




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Do a search here and on Rennlist as I remember hearing something about the Shifter module in the center console going bad. Very well could be the culprit.


To unlock the shifter: http://www.pelicanparts.com/techarticles/Porsche-Cayenne/94-TRANS-Gearshift_Lock_Override/94-TRANS-Gearshift_Lock_Override.htm

Edited by hahnmgh63

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Thank you so so much I've just purchased one from eBay complete unit

Going crazy currently I've been testing also the solenoid which actuates when you put the car in park as attached and only releases the key 50% of the time ...when watching the solenoid it doesn't fully close all the time as pictures

I'm not sure how to unclip the gear change cable, if you have any advise appreciated .

Any more advise appreciated I've used a durametric cable and have no errors ? Do I need to take it to Porsche or is there a better one to buy on eBay ?

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Pictures of actuator with the yellow plug which isn't fully closing 100 percent of the time and unit purchased off eBay to replace existing

Any thoughts why the car won't start? Is it because it thinks it's in reverse ?



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Further research on bad shifting in cayenne any input appreciated

With that said, Peter and Dave, your car transmission problems are definitely solenoid-related. If you get a chance to hook up an OBD-II diagnostic scanner and get a code readout, the chances are good that you will find either or both of the shifting-related solenoids (there are two on the valve body) has failed or gone intermittent (another name for failing). The codes will likely indicate that when they are read.

If no code is generated, it means that the cars computer control module (CCM), the honcho amount the many car computer systems, hasn’t been informed of the problem. Instead, the transmission is keeping the information to itself. Even though the transmission is doing this, it still doesn’t mean there is no problem or that the problem isn’t solenoid-related. It is, more than likely. And, because of the failure your cars are in limp-home mode. Limp-home means the car is driveable as it has a forward gear and, maybe, reverse. The reason it has only one gear is so that you can either get it home to be towed to a shop or so that you can limp into a shop.

Either way, once the car is in the shop, have the specialist look at the solenoids first. If the solenoids are gone, as I suspect, have them replaced and, while you are at it, have the transmission fluid drained and refilled with fresh tranny liquid (don’t forget the filter). You will likely find that your transmission is performing as well as new and that it should go on and perform well for the a long time to come.

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Thanks I'm switching gears neutral safety switch may be root cause because.

1. Engine won't start

2. Dash says R and gear selector in park

My next question is can I use. VW or any cayenne neutral safety switch

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Another possibility is the transmission lever position switch module on the transmission itself.

It senses what position the transmission lever is at.

Edited by bigbuzuki

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Anyone know how to replace a neutral safety switch ?


Per the board Guidelines/Rules -- Please do not double post your requests.


(click to enlarge)


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Thanks sorry wasn't sure I got it posted in the correct category I've figured it out and have a switch on order happy days will keep the forum updated for future users

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Shifter cables question ?? does anyone know if the cables are different from a cayenne S to a CTT , have found one on eBay with low usage I'd number (eBay I'd number 272140374739) at a great price

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