Coolant Leaking Problems of Porsche Cayenne

Coolant leaks while vehicle is stationary. Leak is due to faulty plastic that was redesigned to metal tubing due to common reported issues. Plastic tubing connected to coolant system will become brittle and cracked, causing overheating and lost of coolant. This issue is commonly reported about the 2011 cayanne with a dealership cost of up to $4500.

See all problems of the 2011 Porsche Cayenne 🔎.

The coolant pipe design is flawed. The barb is glued and pressed in the aluminum body. Over time the glue loses its properties and the barb comes out thus causing massive coolant leak and the engine can overheat. The part was redisgned around 2015 where the barb is now threaded, but the original part is a safey hazard for the older models with potential huge repair costs.

1) coolant pipe problems,Porsche never fix them ,had pay to get them fix. (2) filter flange fuel pump leakage,problems Porsche said unfortunately, at this time parts are not available. Had it repair my owen money, did not want to chance a risk of fire. (3) transmission module problems did not shift right,had to buy new one. To many problems.

See all problems of the 2004 Porsche Cayenne 🔎.

Coolant distributor bolted to the back of engine block has a glued -in pipe that connects to a hose. The glued-in pipe is leaking and half way pushed out of the distributor. The imminent failure of this part could have caused immediate overheat and fire due to catastrophic coolant system failure. The repair is extremely expensive. Porsche has a new part that has the pipe threaded in instead of glued. Porsche should recall this and pay for the repair. This is an obvious design flaw and safety issue. Imagine 8 gallons of hot coolant discharging all over, say a motorcyclist going 70 mph. This issue was noticed while doing other coolant system maintenance that was also necessitated by poor design of the vehicle.

See all problems of the 2008 Porsche Cayenne 🔎.

I experienced a similar problem with my 2013 Cayenne s that was previously investigated (pe13-009) by the NHTSA in the Porsche 911. While my wife was driving on a highway the coolant hose completely separated from the housing causing the car to rapidly overheat without warning. Excessive smoke forced my wife to pull over and to exit the vehicle with 2 small children in an unsafe area of the highway. A Porsche service facility diagnosed the vehicle and replaced the component at a cost of $5,343. 56. The vehicle was 4. 5 years old at the time of the repair. In researching the issue I found numerous similar complaints online and found a response from Porsche relating to pe13-009 dated 9/17/2013 (attached). In Porsche's response to question 10, they claim that the adhesive application was automated and there were no further modifications or changes planned. My understanding is that they subsequently began threading the part in question instead of simply using adhesives. In response to question 13c Porsche listed only 2011 to 2014 Cayenne models that use a similar coolant pipe connection method (adhesive) however it appears the Cayenne going back as far as 2007 has a similar connection based on internet complaints. In response to question 14a Porsche lists racetrack use and low or non approved coolant as contributing factors. In my situation the car is used more as a minivan than a race car. It has been serviced at all recommended intervals and only at Porsche service locations. Finally I'd like to point out that the Cayenne and panamera are both front engine vehicles as compared to the 911 that was initially investigated raising new concerns about the loss of traction from the leakage location. I would like to request the issue be re-examined based on the above and given there are far greater numbers of Cayennes on the road than the 911.

See all problems of the 2013 Porsche Cayenne 🔎.

The coolant pipe cracks and cause leak.

Under moderate acceleration a coolant distributor pipe failed without warning and sprayed/leaked coolant all over the engine bay and underneath the car. The failure occurred at the back of the engine where a pressed in pipe fitting came loose from the engine casting. Repair required removal of the engine at a cost in excess of $3. 500. All the coolant was lost from the engine and luckily I was on a side street and not the highway.

Engine coolant hoses are leaking antifreeze. Everytime I pour antifreeze into the car it comes out, im afraid it might damage something else, like the engine etc. They have plastic hoses on them.

We found a huge leak in the coolant system while the car was parked, a porshe technician identified that on the coolant distributor behind the engine there is a coupler which was glued onto the distributor. The glue detached and the coolant pipe blew out causing the entire engine to lose coolant. I believe that it is a pure design issue and Porsche did not issue a recall on it. It was very expensve to fix that problem due to bad design.

The car suddenly developed a huge leak in coolant. After diagnose, it was identified that on the coolant distributor behind the engine there is a coupler which was glued onto the distributor. The glue will break down over a few years and the coolant pipe be blown out causing the entire engine to lose coolant, which is extremely dangerous. This is a pure design issue and Porsche did not issue a recall on. The most ridiculous thing is that in order to fix it, the entire engine and transmission has to come out, which will cost most than 5000 to 6000 dollars.

In 2010, I bought a '08 Cayenne turbo at 40k miles. Prior to delivery, I had Porsche dealership run a system check to confirm the vehicle was mechanically solid & free of defects. Subsequently, they performed a repair on the coolant pipes (still under factory warranty) and assured me it was in excellent condition to purchase. 105k miles: Cayenne's starter was making noises and not functioning 100% of time, so I brought vehicle to the same Porsche dealership who had been servicing it since 2010. The starter was immersed in coolant. I was informed that my (previously "repaired") coolant pipes had a leak & required repair. I reviewed my previous invoice from original "repair" under warranty at 40k miles & it appeared to be the same issue, same part #s, etc. I received another call a few days later informing me that my Cayenne now had a second coolant leak at the crossover pipe toward the back of the engine near firewall (required removal of the engine in order to repair). The service guy & Porsche tech told me the second leak occurred because the "first" repair (actually the second, if you consider it was already repaired under warranty at 40k miles) then properly pressurized my coolant system, causing the next leak, requiring the "next" repair. Apparently the initial repair done at 40k miles was only enough to hold out until the vehicle was out of warranty. Porsche made the repairs & replaced plastic pipes with aluminum ones this time, on my dollar. I had to pay for two coolant repairs, + a new starter, solenoid, & battery, all collateral damage due to the pipe leaks. '03-'06 Cayennes have well known and documented coolant pipe defects resulting in a class action lawsuit against pcna (see: Cayenneclassaction. Com). '08s + are sure to follow. I confirmed duplicate part #s/labor for warranty repair (no cost) and this repair ($$$). $5,000. 00+ repair. Not a typo.

At 38,785 miles coolant pipes leaking and replaced. After repair "internal engine noise" and noise is now louder and engine use more oil. Took to local Porsche dealer vehicle still at Porsche dealer because dealer states" engine needs replaced" because if overheated due to coolant pipe failure pistons walls damaged. Dealer checking with Porsche to find out if they will pay something or all of cost to replace engine. Cayenne at Porsche dealer for over 60 days with no outcome as to what Porsche will pay. Could cost up to $20,000 if invoiced to me.

The contact owns a 2004 Porsche Cayenne s. The contact stated that while driving approximately 50 mph, an overheating indicator light began to illuminate on the instrument panel. The vehicle was taken directly to an independent repair shop where engine coolant was added to the vehicle. While adding the coolant, the technicians noticed that the coolant was leaking out through its plastic tubing. The vehicle was then towed to an authorized dealer where the plastic tubing for the engine coolant was being replaced with aluminum tubing. The manufacturer was made aware of the failure, but offered no assistance. The failure mileage was 54,500.