JFP in PA

Look around for the connector that should be attached to it, that dangling in the open where it could short may just be the source of your short.

OK, may have just been informed that on some years, it was on the driver's side, as shown in this video clip: Replacing Boxster alarm horn

Try looking on the other side (passenger's side) of the battery, that is where they normally live........................

35 minutes ago, Porschelibrarian said:

I agree but this one has different alarm module and no alarm near the battery

The M525 should be using part #996-618-262-03 control unit, which Porsche calls an "anti-drive off" rather than the more common M535 "immobilizer" system.  It should have a separate alarm horn mounted on a bracket near the battery ground cable:

I have personally only seen two V6 Cayenne diesels, both were the property of US service personnel that brought them back to the US when they came home.  As I did not service the boost sensors on either vehicle, and working from memory, the two forward sensors are down in between the cam covers and the intake system, and barely visible from above; and located between the first and second vertical mounting studs on the intake system.  The rear sensor is kind of buried down low on the rear of the intake unit.  Sorry, but I cannot be more help that that as this combination was not found in large numbers in the US..........

Try using Loren's diagram to estimate their respective locations, as noted, they are down in a recess on the side of the intake near the side of the cam covers.

Loren's diagram is correct, two are on each side of the front of the intake, buried down alongside the cam covers; the third is on the rear of the intake, also somewhat down low.

If you cannot locate them, take the car to someone that works on them, they are not that hard to locate.

You may have a coding issue with some of these issues, which will require access to a PIWIS system to evaluate and correct it if that is the issue.

36 minutes ago, fordstanger said:

Is there a source for vehicle harness/connector repair pigtails? I noted one on the left rear height sensor but cannot seem to find a source. My local dealer is not a lot of help. 

 

I need:

1) for the left front ride height sensor 

2) Transfer Case Connecter (small one)

 

06 Cayenne S

VIN WP1AB29P66LA60347

Welcome to RennTech 

Not surprised the dealer wasn't much help, you are looking for harness pieces for a 17 year old vehicle, so they may no longer have access to them, and Porsche tended to run wire harnesses in large sections, such as "rear of the vehicle" or "engine bay", so they may have never been available as a simple repair pig tail.  You might have better luck at a VW dealer as Porsche used a lot of VW components in these cars, and VW used them longer.  Another possibility is to figure out the connector configuration, source the connector, and fabricate your own.  A junk yard or fleabay is another possiblity.  Good luck!

31 minutes ago, Uwon said:

Thanks Loren. First decent information I’ve had. Should have posted here first.

Interesting that I can still lock the car properly but without any chirp. Also the fuel door does not lock which I had assumed to be a faulty actuator. Maybe it’s related to the KESSY/PASS. Thoughts?

Johan

The code you threw indicates that the module in question is not communicating with the immobilizer system, hence no chirp or fuel door locking.

Low side seems a tad high, but knowing gauge sets vary widely in accuracy, I wouldn't worry about it.

Nominal values for a correctly charged system @  82F ambient, measured at center vent:

Vent air temperature: 40-45 F

Low pressure side: 25 PSIG

High pressure side: 203-290 PSIG

I'd say you are a touch low on gas.

Welcome to RennTech  and thanks for some very useful information! 

Try plugging the climate control back in and test it again.  The 2001 were the first year with widely used CAN Bus technology, which is the communications for the dash, removing the control unit may have left the bus "open".

The cam deviation specs for your engine are +/_ 6.00 degrees, so technically, the engine is within specs.  A slack long chain can contribute to deviation issues, but it is not a common phenomenon. At this juncture, I would leave the engine alone and just put some miles on it and check it again, preferably after a drive of quite a few miles.

We see some cars regularly that are in the 4-5 degree range that have been there for many miles and which have not gotten any worse.  Their numbers move around a bit, but always fairly “deep” into the spec range, but are otherwise doing fine.

Your on-board computer system has a speed alarm that allows you to set the speed at which a display lights up and an alarm is sounded. It can also be turned completely off.   It is covered in your owner's manual.....

6 hours ago, Enlai Chu said:

Thanks. Could lack of oil / friction have caused this?

Lack of proper coolant can lead to all sorts of problems, but low oil is usually not one of them.

Welcome to RennTech

Daytime running lights are one of many a federally mandated safety items on these cars (e g: tire pressure monitoring system, seat belt alarms, air bag warnings, etc.).  As such, any shop or individual that turns them off, or shows how to do it could be held legally and financially responsible for damages that could be proven were caused or related to the lights if the vehicle was involved in an accident.

44 minutes ago, porschedog said:

My '03 996 coupe with a manual transmission recently threw the P 0501 code which I am told relates to the Variable Speed Sensor. Has anyone remedied this scenario? Thanks in advance.

P0501 indicates the DME is seeing an out of range vehicle speed signal, this is usually either a wiring issue going to the wheel speed sensor, or and ABS control module issue.  More diagnostics are going to be necessary to determine which one is the problem.

It sounds like your diagnostic system may have sent some sort of command when it connected.

It doesn't help that some of these cars are relatively low production numbers to begin with, meaning few bits get to the bone yard....................

That sounds more like you have a communications issue, are you sure you fully seated all the cluster connectors?

In some states, due to cat thefts, is has become a legal issue to buy or sell "used" cats..............

Good luck on this one; they are showing up on flea bay in other colors for $150-250 each......................and board sponsor Sunset Porsche retails the entire assembly for $546.

Eventually it will code, it takes several driving cycles for that to happen.  If you are concerned, you can swap the post cat O2 sensors, if you get the same readings on the sensor that were working fine on the other side when they are moved to the suspect side, it has to be the cat.