2012 Volkswagen Tiguan Repair and Maintenance Costs
A guide to repairs, service, and maintenance costs for your 2012 Volkswagen Tiguan
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2012 Volkswagen Tiguan ProblemsDecreased Power and Fuel Economy from Carbon Buildup
The Volkswagen Tiguan uses the TSI direct injection engine. This engine is subject to carbon buildup in the intake system which can cause power loss, OBD codes and a check engine light, and a rough idle. In normal engines, the engine is cleaned by the gasoline flowing through the injectors and into the intake system, however, since the Tiguan uses direct injection, gasoline does not flow through common carbon buildup areas.
The solution is to remove the intake manifold and professionally clean the intake manifold, intake ports on the cylinder head, and the intake valves. This may need to be done in as few as 20,000 miles.
Drivers of the Volkswagen Tiguan may experience a clunking noise associated with acceleration from a stop, or downshifting for hard acceleration. This will also be accompanied by a light impact sensation under the drivers feet. Drivers may also notice unexplained changes to their front end alignment while driving.
This issue is commonly called " VW Subframe Clunk", and is caused by the gradual stretching of the bolts that secure the subframe to the vehicle. The subframe is a large plate that secures to the bottom of the engine bay, and connects the body of the car to the engine and suspension. Over time, the bolts that secure the subframe stretch, allowing the subframe to move and hit the bottom of the car when accelerating.
There are many aftermarket kits that can be installed to correct the issue, and Volkswagen has issued a correction including better bolts, and spacers which fit between the subframe and the car.
Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and releasing to retest the system when it finds a fault. The sequence of faults identifying this issue are as follows:
- Succession of loud pops from rear of vehicle
- Pops go away, and fuel economy decreases
- Check engine light illuminates
- OBD trouble code P2404 and/or P0441 is stored
- Engine will not start after refueling (must crank for over 30 seconds)
- Vibration when slowing to a stop
The cause is a valve which is mounted on the front of the intake manifold, commonly called the N80 valve, or EVAP system purge valve. The valve is designed to open under specific circumstances, but a worn valve will remain open at all times, preventing the pressurization of the fuel tank.
Correction of the issue is to replace the N80 valve with the latest revision.
2012 Volkswagen Tiguan Questionswater pump woes (1 answer)
water pump replaced at 65000m & leaking again 73000m. dealer says engine head oil leak caused second failure; should I fix the car and sell it - don't want to replace pump every year
And what is fair price for each
2012 Volkswagen Tiguan RecallsDrivers Side Air Bag Does Not Function In Crash
The driver's side air bag may not be powered due to a loss of electrical connection from the clock spring sliding contact in the steering wheel caused by contamination. Dealers will repair the vehicle free of charge.
Under certain conditions, when using winterized fuel the engine may stall without warning due to bubbles forming in the fuel system, increasing the risk of a crash. Dealers will update the vehicle's software to increase the fuel pump pressure in order to correct this concern.