What causes a Porsche Cayenne to turn over then start?

Because it usually turns over then stops I tried releasing the brake immediately after it starts turning over on a normal start. This has no effect – it carries on turning over and starts. So I think the brake switch affects the initial crank but won’t cause the starter to stop once it’s started.

Why does my brake pedal not come back up?

After being on holiday for a few weeks, I come home and find that the car brake pedal on my (automatic tranmission with ABS brakes) car will no longer spring back up after depressing it. After doing a lot of reading, the problem would appear to be either with the brake booster or the master cylinder.

What’s the volt meter on a Porsche Cayenne?

Turned it again, and started up as usual. Volt meter goes straight up to around 14, so at least the alternator is working. I’m not convinced it’s the battery for a couple of reasons.

Why does my car idle when the pedal is on?

Pedal pressure 99.9% of the time almost always has something related back to the hydraulics of the system or the vacuum assist (booster). Start with the line, if you have any carb cleaner laying around, you can also soak the line with it and if there are any tiny cracks you’re not seeing, the idle will raise.

What causes a soft pedal on a Porsche Cayenne?

If the fluid level is low, check for leaking brake fluid under the car and also at each brake caliper. If the fluid level is fine, try bleeding the system. A soft pedal can be caused by air in the brake lines. See our article on Bleeding Brakes for more information.

How does a brake booster work on a Porsche Cayenne?

The brake booster is a device that uses vacuum pressure from the engine to decrease the amount of effort needed to push down the brake pedal. It does this by using a large vacuum diaphragm controlled by a small electric air pump.

When to replace master cylinder in Porsche Cayenne?

If the brake lines have been bled and there is no obvious change in the brake fluid level, it is probably a good bet that the check valve in the master cylinder has failed and it is time to replace it. A failing master cylinder can cause a few different symptoms.

What causes engine to run rough after warm up?

Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve, EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wire. Now, let’s fix the issue when engine runs rough after warm up in sequence and later troubleshoot the actual cause of it. 1.

What happens when a cam sensor fails in a Porsche Cayenne?

A failing cam sensor can cause rough running, poor throttle response and in some cases will prevent the engine from running altogether. When a cam sensor fails, it usually triggers a fault code related to the sensor that isn’t working correctly.

What happens when you disconnect the battery on a Porsche Cayenne?

Our 2004 porche cayenne battery was dead, I left the lights on over night. We trickle charged the battery. It shows full, but when you put key in, dash lights up but engine will not turn over. No messages on dash, any ideas?

Why is my climate control not working on my Porsche Cayenne?

A common problem in the Porsche Cayenne is a condition where the climate control fan suddenly starts working intermittently, only at one speed or not at all. The variation in the speed of the fan is controlled by the blower motor regulator. Once the regulator fails, a single speed fan is commonly the result.

Why is the ignition coil on my Cayenne not working?

The ignition coils on the Porsche Cayenne V8 have been updated a number of times. A single coil failure is typically a sign of more trouble to come from other coils, so it’s usually best practice to update them all. A failing coil typically stops any spark and sets a misfire code with a completely dead cylinder.

Why is my Porsche Cayenne leaking steam under the hood?

Once they degrade and a leak starts it quickly speeds to a point where large clouds of steam can be seen billowing from under the hood when the engine is running – steam powered Cayenne! There is an update kit available to permanently fix this problem and change the plastic pipes to metal ones.

Why is my Check Engine light on on my Porsche Cayenne?

Symptoms: CEL, Loss of Power, Misfire Under Load. There are multiple reasons why a check engine light can be set for misfires. A code scan can reveal which cylinder is misfiring but not usually exactly why. CEL – Misfire – Faulty Ignition Coil. The ignition coils on the Porsche Cayenne V8 have been updated a number of times.

Why is the ignition switch stuck on my Cayenne?

The ignition switch on the Porsche Cayenne can be a bit troublesome. Over the years, continual use can wear out the internal components, leading to the key being stuck in the ignition when you try to remove it.

Where is the disconnect point on a Porsche Cayenne?

The disconnect point is located under the driver’s side carpet, near the seat. You’ll see a slit in the carpet, pull it up and you’ll see the 13mm acorn nut holding the ground lead to the frame (green arrow). Remove the nut and pull the lead up off the post.

How long does it take to replace ignition switch on Porsche Cayenne?

The good news is that replacement is relatively easy and should not take more than an hour. Due to the complexity of the electrical system in the Cayenne, it’s important to check that your battery is in good shape prior to replacing the switch.

Why does my Cayenne have the same engine control unit?

The likely reason is that the instrument cluster, through which all other modules’ diagnostic information passes, is faulty or is shorted to ground. This happens frequently when aftermarket electronics are added to the car. From 2003 – 2006, the Porsche Cayennes all used the same engine control unit, regardless of being 6- or 8-cylinder engines.

When does a Porsche Cayenne go into sleep mode?

Check each system for faults. Porsche Cayennes use the CAN bus for diagnostics. The CAN bus will go into sleep mode after only a few minutes if the car’s engine is not running. To prevent this, you can either start the car’s engine (when it’s safe to do so) or turn on the hazard lights (emergency flashers) just after turning on the car’s ignition.

Can a coolant leak cause a Porsche Cayenne to fail?

A coolant leak can be deadly for any engine – overheating of the engine due to a loss of coolant very quickly does damage that could result in a total failure and an engine replacement being needed. The coolant pipe failure in the early Cayenne typically happened quickly and produced large amounts of steam.

Why does dash turn off when trying to start?

But today dash turned of and then back while trying to start it. Beginning to think maybe battery is on its way out and giving me funny signs. No voltmeter. Ill see how next week or two goes but maybe grab a new battery or meter to hang on to just in case. Voltmeters are cheaper than batteries, and can be used on many jobs. Get one of those first.

Why does my Car start but then stop?

The system may have a weak spark or the spark may fail to reach the spark plugs. Start by checking the service schedule for the spark plugs and spark plug wires. Remove and check one spark plug at a time.

What to do if your VW starts then dies?

Ill see how next week or two goes but maybe grab a new battery or meter to hang on to just in case. Voltmeters are cheaper than batteries, and can be used on many jobs. Get one of those first. Also, should it become necessary to remove the battery, also remove the battery box and clean the grounds under it.

Why does my car have a start stop system?

Some are almost unnoticeable, others make the car shudder each time they activate—but start-stop systems are here to stay. First rolled out in Europe and Asia, where crowded city driving requires cars to spend more time at a standstill, they switch off the engine when the car’s not moving.

How does a Cadillac start stop system work?

READ THIS: 2016 Cadillac Start-Stop Systems To Use Ultracapacitors To Augment Batteries (Sep 2015) That lets the fuel injectors pulse and fire during the middle of a complete rotation of the crank, against having to wait for a complete revolution that lets the first cylinder reach that position to start the fuel-spark timing sequence.

When does a car’s starter motor wear out?

(May 2014) Crucially, this reduces starter-motor speed (in RPM), since 90 percent of starter-motor brush wear occurs not during cranking, but during the coast-down after the start has finished. If a higher-torque motor can spin more slowly, its coast-down time is shorter, increasing its longevity.

Do you need a starter for a start-stop system?

“Automotive engineers don’t use ‘traditional’ starter motors in these situations,” he explained. “The starter used for start-stop systems combines several technologies.” What follows is his explanation of those technologies, lightly edited by Green Car Reports for clarity and style.

How much does a hard to start Porsche Cayenne cost?

Porsche Cayenne Car is hard to start Inspection costs $85 on average. A car that is hard to start can be a major inconvenience. While this is usually not a life threatening malfunction, it can make getting around much more difficult. There are a number of issues that will make a car hard to start.

How can I tell if my Cayenne starter is bad?

You need to start by checking power to the starter. The starter may be faulty. If there is not power to the starter then you may have a bad starter relay or a problem with the ignition switch. If there is power then the starter is bad. Ask Your Own Car Question

How can I Fix my Porsche Cayenne’s Battery?

The vehicle may think it is in drive. Turn the key on and put the vehicle in nuetral to see if it will start. Be sure to have the parking brake applied when doing this. If that does not help then also try putting it back in park to see what happens. FixItMan, Master Technician Category: Car Satisfied Customers:17,863

Why does my Porsche Cayenne make a fan sound?

It is the “regular” sound the car/key makes when it starts normally,it just may sound more exaggerated. When we try to start it though, the key turns and then the fan comes on and goes super fast. ? Sometimes the display will say “Press brake pedal” and if you do and hold it down, the fans really start goin.

Where was the 2006 Porsche Cayenne Turbo’s made?

It was not by accident that Porsche chose to introduce the 2006 Cayenne Turbo S on its own world-class (assembly-line adjacent) racetrack in Leipzig, Germany, as well as in the silty, orange sand dunes outside Dubai in the United Arab Emirates. Why not?

What kind of transmission does a Porsche Cayenne have?

Porsche’s six-speed Tiptronic S automatic transmission is standard equipment on the Cayenne Turbo S. It offers the driver the option of automatic shifts or manual shifting by nudging the selector lever or by thumbing switches on the steering wheel.

When did Porsche Cayenne 4.5 s engine get rebuilt?

Porsche Cayenne 2004 4.5 S petrol had engine rebuilt 15 months ago pistons/valves /gaskets all replaced. Last week the vehicle started to feel groggy and done oil service and changed all spark plugs. One of the plugs had oil traces on it. The garage that rebuilt engine had only covered the work guarantee for 1 year.

Why does my Cayenne have a weak starter?

The issue was a weak (not dead) battery. The underlying problem is that when any engine is hot the compression goes up and it is harder to turn it over, so a weak battery, one that is fine with a cold engine, can exhibit this problem. I have also had a weak starter motor cause similar symptoms on other vehicles.

How does ECU work on Porsche Cayenne S?

The ECU, or in this Porsche Cayenne S’s case, DME, has thousands of algorithms which run tests and checks that monitor the various running states of the vehicle. However, with as complicated as these computers are, they don’t catch everything, everytime.

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