Wiring problems

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Electric wiring

Volkswagen Jetta 1985  2500005 miles
My gauge not working.My battery is looking power due to the fan.My lights are dim,it's difficult to change to second gear. Sometimes my fan won't go on.
Shuniel from South Africa 8 months ago  
SH
1 report 

Radio wiring harness

Volkswagen Jetta 2009 Jetta 168445 miles
Trying to wir see in my after market radio
Only1thrasher from United States 9 months ago  
ON

Yellow wire going into fuse box

Volkswagen Jetta 2010 Jetta Se 18500000 miles
A few seconds ago

My 2010 vw jetta had a yellow wire incerted in with one of the interior fuse box fuses my friend took it out and my car went into immobilization mode do you know which fuse it’s supposed to be inserted into ?
Jackieleethatsme from United States a year ago  
JA
1 report 

Wiring diagram

Volkswagen Jetta 2020  255574 miles
The car can lose power easily because of this wires who are not connected properly to the 4 pin sensor
Boti from United States 2 years ago  
BO
5 reports 

Android touch screen radio with backup camera not working properly.

Volkswagen Jetta 2008 Sedan, 2.0T BPY, dsg, Wolfsburg edition  165000 miles
Replaced the factory multiple disc unit that died with an aftermarket android CarPlay unit. Wired it into the taillights along with another one for a dash cam (it’s working perfectly). Everything except the backup camera works fine.
The trunk doesn’t work now either.
There’s no real instruction manual whatsoever. China. Came with a wiring harness and cambus decoder that plugs right in.
Got any ideas on this?
JohnW from United States 2 years ago  
JO
2 replies 
JohnW from United States 2 years ago
The camera works perfectly with the power on and the engine off. Switching into reverse mode and shows a good image from the backup camera.
However, with the engine running it doesn’t work. It briefly shows a multiple image, then goes black, and gives a no signal message.
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JohnW from United States a year ago
Update:
I’ve seen a gadget on AliExpress that claims to fix this problem. A transducer or something. The device filters out the hidden data transmitted in the wiring somehow. Apparently, this computer data is only present when the engine is running.
It looks like a typical canbus adapter for led headlights that wires in like a ballast resistor.
Could it be that simple?
Why is this not common knowledge if so?
I’m going to try it. Costs less than $5.
Comment

2021 vw jetta 1.4 tfsi No cranking

Volkswagen Jetta 2021 1.4 tsfi 63000 miles
Doesn't crank. All the fuses are good. Battery is good 12.6 volt. No cranking at all. I hooked up the ECU from another jetta, same result. Looks like whether immobilizer issue, or ignition switch, or ground wire.
Slavio from United States a year ago  
SL
4 reports 
MAJMAC from United States a year ago
I get a fast clicking (dash lights flash in sync) with no motor turn.
Justyouritguy from South Africa 7 months ago
Have you tried checking the relay? I'm new to ecu's came from an IT and electronic background. Done a bit of mechanical work in my days.
Comment

Engine fild

Volkswagen Jetta 2007 Body 286000 miles
Under heavy acceleration, when the RPM reaches 5,000, the car loses power and goes into limp mode. The EPC and Traction Control lights turn on. When this happens, the transmission stops shifting and jerks or stutters a few times. Note: The car originally had a 1.6L engine, but it has been swapped with a 2.0L engine. However, the original 1.6L ECU (Computer) and wiring harness have not been changed. "
Muhammad from other 6 months ago  
MU
1 report 
Dibbley from Great Britain 5 months ago
I think what you thought you didn't need to do. You should have when you changed the engine. That's a tuff one to help with without taking a look and sticking it on a diagnostic machine. Keep reves at 4000 and get it to a mechanic.
Comment

Power window

Volkswagen Jetta 2016 1.4 153000 miles
Driver switch window not working but the three switch are working. I try to replace the driver side switch still the same only the driver window is not working it motor, wirings or fuse?
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Jocas from Canada 10 months ago  
JO
14 reports 
Jksh from United States 5 months ago
Same here but with two fronts
Comment

Radio inop.

Volkswagen Jetta 2001 Tdi 358000 miles
Radio doesn't turn on. I can't find a fuse panel diagram and need a radio wire diagram
406 Field Diesel Tech from United States 2 months ago  
40
2 reports 

Air-conditioning will not turn on

Volkswagen Jetta 2019 1.6 81000 miles
Air-conditioning pump works when using power probe to the trigger wire to engage the clutch the AC or max AC will not turn on the air-conditioning pump. No noises pressure switch is good. AC lines are charged.
Darren from United States 2 months ago  
DA

VW Jetta Turns off on stops or when not accelerating.

Volkswagen Jetta 2007 2.0 Manual 179607 miles
My turns off some times out of no where, I start it again and continue, if I stop on red light it turns off, or sometimes when stop accelerating it turns off even when running. I changed the 4 wires and the cylinders (bujia) I guess they are called. The fans were not turning on, so we connected them with the AC and I now turn on the AC to have the fans on. The scanner keeps giving the errors after I change the entire 4 cables and bujias or cylinders.
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Rogeriogt from Guatemala 3 months ago  
RO
1 report 

Starting problems and cluster board problems

Volkswagen Jetta 2011 Automatic  123000 miles
So I go to start my car and it’ll start fully but will shut off a couple seconds later. I tried to resync my key and it’s doing this now. I had a locksmith come out and he’s programmed 2 keys to it. My original key and a spare and they both won’t work. I’m thinking it’s either fuses or electrical wiring problems. I’ve checked all the fuses and they seem all good to go. We plug the cluster into a smartpro programming and it’ll all turn on but when I plug it into my car it won’t start my car, so we don’t think it’s the cluster board. I don’t really know what to do if anybody knows what’s going on let me know
Charles from United States 8 months ago  
CH
3 reports 

Starter relay location

Volkswagen Jetta 2010 Jetta 200000 miles
No start no power at the field wire
Don lReady007 from United States 8 months ago  
DO

Battery light not glowing in instrumental cluster

Volkswagen Jetta 2013  35000 miles
I have check alternator out is ok and wiring continuity also ok some time i have on the ignition found battery light is glowing for 10-15 seconds and off suddenly
CARS DOCTOR from India 10 months ago  
CA
2 reports 

No crank no start

Volkswagen Jetta 2002 2.0 180000 miles
2002 Volkswagen Jetta GLS 2.0 no crank no start I put in a new starter I also replaced the positive cable wire that goes from the battery to the starter what else could I do to work everything else or any other issues out
Teeto from United States 10 months ago  
TE
2 reports 

Stalling, Sputtering.

Volkswagen Jetta 2015 Jetta S 2.0 126850 miles
Sometimes stalling when stopped or sputtering when accelerating from stopped. Comes and goes but get's more frequent in the drive. Got a code P0131 02 Sensor 1. I replaced it, same issue. I unplug the 02 sensor and it will run. I thought it was the harness on the vehicle and had dealership take a look. They did an overlay on it "as a start". They said it was done, I kept asking about the 02 sensor before pick up. "It's good, we drove it, etc.". After pick up about 12 miles later I stall/sputter. They say it's the ECM and Cat. Converter.

Looking for second opinion.
I've replaced spark plugs, wires, coil. MAF, MAP sensors. Purge valve.
Millertime981 from United States a year ago  
MI

Power seat problem

Volkswagen Jetta 2013 2.0 turbo sedan 118681898 miles
I own a 2013 VW Jetta GLI. Recently, the driver’s seat was removed for upholstery repair. After reinstalling the seat and reconnecting all wiring, the airbag system and seat heating work correctly, but the power seat adjustment functions (forward/backward, height, etc.) do not operate at all.
Could you please advise on possible causes or provide guidance on resolving this issue?
Amiqo from other a year ago  
AM
1 report 

Starter fuse

Volkswagen Jetta 2019 SE 158000 miles
My starter fuse keeps blowing. Does the fact that the windshield wiper fuse is removed have anything to do with this? The wand on the steering wheel was broken off and I removed the fuse so they couldn't be turned on by chance somehow. Could that be what's making it blow? I know there has to be something shorting it out or a naked wire somewhere to make it just blow out of the blue like that.
Breezy from United States 2 years ago  
BR
6 reports 

Headlight/heating issue

Volkswagen Jetta 2011 2.5 300000 miles
The drivers side headlight is out. Replace the headlight assembly but the headlight is still out. Need wiring system for it so I can replace whatever is wrong. The heat isn’t working in the passenger side of the car and it is weak on the drivers side.
Tina from United States 2 years ago  
TI
3 reports 
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