Electrical system problems
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Engine runs but won't start 
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Volkswagen Jetta 2001 143 miles
Hope someone can help me. I own an automatic Jetta 2001 and it was working properly until suddenly, one day, it wouldn't start again. The engine runs but there is no way it can be started. The fuel pump's pressure has been checked, the coil replaced as there were no sparks in the spark plugs, but the problem is still there. All fuses are alright as well as the crankshaft's sensor. The acceleration body has been cleaned and the battery replaced. Can the stereo have something to do? Because it is indicating SAFE 0000, meaning that the car is blocked? Can someone please tell me what to do?
3 reports
1
SI
After many attempts at trying to solve the same problem you are now having with my Jetta 2001, one day I found out that the temperature's sensor, through which the cooling liquid runs, had oil in its exterior. It was dirty due to a previous tuning, so I removed the connector to clean it and the failure disappeared. I really don't know how this can affect the starting, but I cleaned certainly deeply that connector, which has 4 pins, and the vehicle started as if nothing had happened. I then bought the sensor and the problem was finally solved.
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Best answer (according to car)
CA
Thank you, siller for reading and sharing your experience. After trying different things, I myself removed the crankshaft's sensor, took it to a good electrician and he said it was not working properly. I then bought a new one, installed it and it finally started.
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CommentMany failures Solved
Volkswagen Jetta 1999 135000 miles
The first failure in my car appeared from one day to the other. It was working perfectly one night, but the following morning it wouldn't start. There was some engine work but I could not start driving it. It seemed as though there was a fuel deficit, but it had been refuelled the day before. I checked the fuel pump, and surprisingly found out there was no sparking, so I logically thought the problem was with the coil. I changed it but it kept doing the same thing. I then checked relays, fuses and that there was electrical current reaching the coil and everything was ok. The crankshaft's senso… Read complete
2 replies
Best answer (according to josey)
The same happened to me and the problem is in the distributor.
I've changed the distributor and it seems as though the problem has been solved. At least for the past two days it has been working perfectly. Thank you very much!
CommentStalls when driving, EPC and oil indicators
Volkswagen Jetta 2002 168000 miles
I have a Jetta A 4 2002 and, when driving, it suddenly jerks, EPC and oil indicators turn on and it loses power until it stalls. I try to speed it up but it won't answer properly. Only after 20-30 minutes the engine will start again. The car has been tuned, the battery, oil pump and air sensor changed but it keeps doing the same thing. Can anyone help me? It really worries me when I'm driving and it suddenly stalls.
2 reports
Check the electronic acceleration body, that is what the indicators mean.
Thank you patience, I will tell this to the mechanic.
CommentCompletely dies at stops and then hours later will start up again,
Volkswagen Jetta 2022 Jetta GLI 5000 miles
We bought new. After 7 months of ownership, car completely died at stop light. Was able to restart. Happens intermittently. Twice have returned to parked car and completely dead. Now this weekend this happened, started back up after 24 hours just to die again. After 3 minutes it started again. We have taken it to the dealership and they replaced the battery and the control unit after the first 3 times but obviously this didn’t fix it.
1 report
There are a few potential causes for this problem, including a faulty alternator, a failing battery, a malfunctioning starter motor, or a problem with the electrical connections in the vehicle. A qualified technician would be able to diagnose the issue and provide a solution.
CommentStarter motors
Volkswagen Jetta 2009 Manual 60000 miles
Ok, it is our daughters VW Jetta 2009 77TDI. She first took it to a vw service centre (Australia) had a power loss and a clinking noise (not engaging) but does start. They put it on their system and came up with zero, then they update the computer and re did and it said, injectors. But zero for the starting. She brought injector cleaner and that fixed it, but still the same on starting. She had already replaced the battery (which turns out is the wrong battery 500 cca) She decided to sell the car, but a mechanic told her she need a new starter motor (this was during the road worthy inspection)… Read complete
2 replies
glendagardiner from Australia 7 years ago
We got a call back from VW, their response was they couldn't comment as non genuine part was used. We did get in contact with a German car specialist and he said, if the larger starter motor has been in now for a few months he can not see any issues with the electronics as it would of happened by now. Also he advised in getting a new key as it can cause start up noise...
CommentJetta Won't Turn Over After Battery Replacement
Volkswagen Jetta 2004 GLI, 1.9L, Gas, Automatic, 123000 miles
The car was running just fine, over the winter I had to remove the battery because it died due to the cold so I took it inside and put it on a trickle charger when I put the battery back in the car it cranks but won't turn over seems like maybe the emergency theft system not too sure anyone know what this is and can help it's highly appreciated thank you
Passenger headlight and tail light not working
Volkswagen Jetta 2011 Sadan 180000 miles
Changed passenger headlight and now it doesn't work and the there is no tail lights keeps blowing a 15 amp fuses in the cabin fuse box
2014 Jetta SportWagen fuse box diagram
Volkswagen Jetta 2014 Sportwagen 112000 miles
I cannot find a diagram to explain which fuse affects the overhead interior lights.
1
Car horn not working thing it might be relay
Volkswagen Jetta 2015 Se 158698 miles
Horn not working maybe the relay
No start no spark
Volkswagen Jetta 2001 VW Jetta 1.8 T 5 SP Manual 120000 miles
Cranks but no start
Unable to check codes checked power supply battery power to diagnostic plug is 12 v and also ignition power is 12v still unable to read codes,has after market stereo
Unable to check codes checked power supply battery power to diagnostic plug is 12 v and also ignition power is 12v still unable to read codes,has after market stereo
3 reports
It wont start, you can hear it trying to but wont
Volkswagen Jetta 2001 4 door 2.0 standart 80000 miles
Checked the 409 relay and fuses also checked fuel pump and fuel filter and their ok
1 report
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