Volkswagen Jetta Common Problems and Solutions
Idle Rattling
Problem:
The engine rattles while you're idling, the check engine light may be on, and the engine misfires.
Solution:
It's a fact that the timing chains on the Jetta are highly likely to snap prematurely. The longer you drive the car with a broken timing chain, the more damage will be inflicted on the engine. Order a replacement from our parts list and install it as soon as possible.
Difficulty level
Timing Chain
Trouble With Gear Changes (Automatics)
Problem:
The car is no longer making responsive gear changes.
Solution:
This can be a significant problem, especially on 2WD models. The only true solution is to order a replacement automatic gearbox and gear system from BreakerYard and carry out this demanding job yourself.
Difficulty level
Misfiring Engine
Problem:
The engine is misfiring, and the check engine light is on.
Solution:
This could be a spark plug failure or a broken ignition coil. Check both before ordering replacements from us. If the coils and spark plugs do not appear to be damaged or worn, inspect the spark plug casing, which in rare cases can be the cause of the problem.
Difficulty level
Spark Plugs
Window Malfunction
Problem:
One or more of the power windows are no longer working.
Solution:
A common issue with the Jetta is a worn-out regulator. You can find replacements in our store and have them delivered directly to you. It's a somewhat fiddly job, but installation should take less than thirty minutes.
Difficulty level
Window Regulator Mechanism
DPF warning light
Problem:
If you notice the DPF (Diesel Particulate Filter) warning light come on the dashboard of your diesel Jetta, then the DPF is most likely blocked. This component is responsible for reducing emissions from the exhaust system. The DPF can become blocked when you are driving short distances around town, as it doesn't generate enough heat to burn off the particulates.
Solution:
Take the car out onto the open road (Motorway/A-road) and drive at between 2000-2500 rpm for at least 15 minutes to burn off the particulates, which clears the DPF. Once you clear the DPF, the warning light should go off.
Difficulty level
Automatic gearbox problems
Problem:
It has been known for the automatic gearboxes on these cars to experience various issues. One of the most common problems is gears struggling to change, which could be caused by issues with the gear linkage. Does this video below resemble your problem?
Solution:
Many issues can occur with the automatic gearbox. It is best to consult a professional to diagnose the problem and fix it properly.
Difficulty level
Electrical problems
Problem:
The Volkswagen Jetta has known issues with electrical problems. The usual cause is due to loose wiring. Most of the time, the loose wiring can be found behind the dashboard.
Solution:
No matter what your electrical problem is, check the wiring to make sure there are no loose wires somewhere along the line. If you find a loose wire, fix it to resolve the issue; otherwise, you might need to replace the faulty component.
Difficulty level
Poor running/idling
Problem:
If your car is running poorly and feeling sluggish, you probably have an issue with the ignition coils. If the idling is problematic, it is likely due to a fault with this part as well.
Solution:
The only way to resolve this issue is to fit a new ignition coil. It is best to replace all the coils at the same time.
Difficulty level
Ignition Coil
Heating problems
Problem:
You may have noticed that the heater is not working at all, or is not functioning properly on certain settings, which is usually due to a faulty heater resistor.
Solution:
To resolve this issue, you will need to install a new heater resistor.
Difficulty level
Heater Resistor
Musty Smell From HVAC Vents
Problem:
You can smell something musty and damp coming from the HVAC vents.
Solution:
Condensation often forms in the heater case and the SC system, especially if the car has been left to idle for over two hours. Ensure the drain system is free of debris and clean out the heater case using a specialist cleaning product.
Difficulty level