Volkswagen Touareg TDI Problems
RepairPal has identified the most common problems with the Volkswagen Touareg TDI based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
The 2.0L TDI engine used in the 2002-2012 Volkswagen Touareg V10 TDI very commonly faces camshaft lobe wear issues causing:
-Pronounced loss of power
-Backfire through the intake (heard under the hood)
-Rough vibrations while the engine is running
-decreased fuel economy
Correction for this issue requires substantial internal engine work including replacement of the camshaft, hydraulic lifters, and possibly fuel injectors
To help avoid this issue, ensure you are using the correct oil for your engine, as listed in your owners manual.
The 2009-2012 Volkswagen Touareg TDI 3.0L engine is equipped with a mechanical high pressure fuel pump (HPFP) which delivers highly pressurized fuel needed to run the clean diesel engine. This pump is know to fail at random in both new and used Touareg TDI models leaving the vehicle running very roughly, with very little power, unable to start, and/or OBD code P0087
The most common causes of failure are fueling with gasoline or biofuel, and a factory defect in the HPFP.
When the HPFP fails, it sends fragments of metal through the entire fuel system, necessitating replacement of every component, with exception of the gas tank.
To help prevent this issue, ensure you are using only diesel fuel, and highly trafficked gas stations.
Additionally, Volkswagen has issued an extended warranty of 10 years/120,000 miles for this condition on select vehicles.
Because of issues with the glow plugs and/or the glow plug wiring harness from the control relay, the Check Engine Light may illuminate. Our technicians tell us there is a service bulletin, not a recall from Volkswagen regarding replacement of the glow plugs on the 2004 model year only.
Using the incorrect coolant may cause the engine coolant to become jelly like which can result in cooling system damage. Our technicians recommend using only the recommend G-12++ coolant.
If the incorrect viscosity engine oil is used an engine noise may develop, in most cases heard only when the engine is cold. Our technicians recommend using the correct oil viscosity engine oil as noted on the oil fill cap.
Condensation may develop in the heater case which can cause a musty odor from the heating, ventilation and AC (HVAC) system. Our technicians tell us a cleaner is available for the heater case. Also, the drain system should be checked for debris.
Tire wear can be problematic, very dependent on driving style. Our technicians recommend regular tire inspection and replacement when necessary.