How can I reset my 2004 porche cayenne turbo service engine light?

there should be a platen on the bottom of the motor on the driver side in front of where the transmission bolts on. It looks like it is a plate sticking off of the motor casting itself. Hope this helps.

Here's a link Felix to your timing chain diagram. Porsche Timing Chain Cayenne OEM Engine Mechanical amp Timing Related Parts

What is the problem?
Parking lights are not working? Make sure you installed the right light bulb and placed it tight.

Although unlikely, replacing with a bad bulb can send you on a wild goose chase! Check for voltage with a VOM at the socket.
This is a great forum:
How To Replace Parking Lights Inside Headlights 6speedonline com Forums

Anything is possible. Whether it is legal or not, depends on where you live. However, just the fact that you would ask a question like that, makes me seriously doubtfull that you should attempt any such undertaking yourself.

If your Porsche is not fast enough for you...trade it in on a Veyron.

/get a new battery or charge it overnight!

Is it possible you got bad gas, check for vacum leaks in engine compartment,ifyou have one you should be able to hear it with the engine running,Note with a Turbo if the engine has a misfire this could cause damage to your Turbo very expenceive .take care of it asap.

the repair manual is hard to find, now check the quality of engine oil , maybe need to replace and oil filter, try to use an high grade oil, for example, if now is using 5w_20 then use 10w_40

I think that mechanic is stealing your money

The noise surely comes from some engine mount , or exhaust system

[email protected] , @mecanicasesoria

the most common source is the turbo shaft seals leaking oil.