Volkswagen Cars & Trucks - Recent Questions, Troubleshooting & Support


It would have been useful to know where the hose from the tee goes and what diameter as that is new to me. 50 years as a repairer and I have never seen a top radiator hose with a tee branch.

Usually the engine heats and the thermostat opens and starts coolant circulating through the radiator, up the bottom hose into the water pump to be pushed round again.
The volume of coolant moved by the water pump, even at idle should be far in excess of that circulating through the heater matrix ensuring adequate circulation through the radiator as soon as the thermostat opens.

The top hose must be hot because the thermostat is open so why doesn't the coolant go further and heat either the branch or the rest of the hose and radiator...
Sometimes a pump with a plastic impeller will lose a vane and overheating due to insufficient circulation is likely.

Other things are more common - semi-blocked radiator tubes restricting coolant flow.
Silt build up in the cylinder block causing hot spots in the cylinder walls.
Restricted air flow through the radiator.
Electric coolant fan not working.
Excess combustion gas in the cooling system interfering with thermostat operation.
Degassing system blocked with the same result.

Volkswagen Cars... | Answered 21 hours ago


I need a schematics radio wiring for a 2007 vw jetta

Volkswagen Jetta... | Answered on Jun 27, 2020


I had/have the exact same problem with my 2004 Treg. I took it to the dealer in April and they told me it was the fuel pump and replace them. Everything was fine until the other day when it happened again. I took it to a local mechanic who told me it was the crankshaft sensor. If it happens again I'm selling the car for scrap!

2004 Volkswagen... | Answered on Jun 21, 2020


The fuse box diagram for 2005 VW Touran
Fuse box / relay plate, fascia 1:
1. F1 (5A) = Interior rear view mirror
2. F2 (5A) = Trailer socket
3. F3 (5A) = Heater / Air Conditioning (A/C)
4. F4 (5A) = Fuel lift pump control module
5. F5 (5A) = Heated front seats
6. F6 -
7. F7 (5A) = Heated front seats, heater / Air Conditioning (A/C)
8. F8 (5A) = Heated windscreen washers jets
9. F9 (5A) = Airbag
10. F10 (5A) = Telephone
11. F11 (10A) = Power steering
12. F12 (5A) = Automatic transmission (AT)
13. F13 (10A) = Headlamp adjustment
14. F14 (10A) = Anti-lock brake system (ABS)
15. F15 (5A) = Data link connector (DLC), reversing lamps
16. F16 (5A) = Databus cooection
17. F17 -
18. F80 (5A) = Emergency vehicles
19. F19 (5A) = Emergency vehicles
20. F20 (10A) = Parking aid control module
21. F21 (5A) = Automatic transmission (AT)
22. F22 (5A) = Auxiliary heater
23. F23 (10A) = Stop lamps
24. F24 (10A) = Auxiliary heater, Data link connector (DLC), heater / Air Conditioning (A/C), light switch
25. F25 -
26. F26 (10A) = Engine management
27. F27 -
28. F28 (5A) = Light switch
29. F29 (15A) = Rear screen wiper motor
30. F30 -
31. F31 (15A) = Auxiliary heater
32. F32 (15A) = Windscreen washers
33. F33 (10A) = Emergency vehicles
34. F34 -
35. F35 (10A/40A) = Heater / Air Conditioning (A/C)
36. F36 (10A) = Emergency vehicles
37. F37 -
38. F38 -
39. F39 -
40. F40 (20A) = Trailer socket
41. F41 (20A) = Trailer socket
42. F42 (15A) = Auxiliary power socket
43. F43 (15A) -
44. F44 (5A) = Alarm system
45. F45 (5A) = Audio system
46. F46 (5A) = Multifunction control module 1
47. F47 (25A) = Cigarette lighter
48. F48 (20A) = Headlamp wash / wipe system
49. F49 (10A) = Door function control module driver + passenger
50. F50 (30A) = Heated front seats
51. F51 (20A) = Sunroof
52. F52 (25A) = Multifunction control module 1, auxiliary heater
53. F53 (25A) = Multifunction control module 2
54. F54 (5A) = Automatic transmission (AT)
55. F55 (5A) = Emergency vehicles
56. F56 (15A/40A) = Heater / Air Conditioning (A/C)
57. F57 (30A) = Door function control module driver + passenger
58. F58 (30A) = Door function control module left + right rear



Volkswagen... | Answered on Jun 20, 2020


A switch opens the door when you use the central locking system. If the door fails to open or close, this switch has probably gotten detached or the locking mechanism is damaged.
To find the problem and fix it-pull apart the door panel and feel for a thin rod connected to the locking mechanism.
This will help you pinpoint the issue and then fix it.

2003 Volkswagen... | Answered on Jun 08, 2020


Try this..... Put key into ignition and turn so lights come on (facia).. Do not start car... Turn the steering wheel left to right 90° approx a few times. This will be quite hard to do.
Then turn off ign and restart as normal.
If steering wheel light has gone out and steering is working you will need a new motor drive at some point.
Note.. Sometimes the fuse blows so check fusebox and replace if necessary.

Volkswagen Polo... | Answered on May 28, 2020


Usually it's the coolant sensor (near thermostat body by cylinder head).
May be better to get it put on to a scanner to verify.

Volkswagen Polo... | Answered on May 27, 2020


Get it put onto a scanner to verify if it's wiper switch or motor. (sounds like switch but check first) Don't guess always test first or it will cost twice as much

Volkswagen Polo... | Answered on May 27, 2020


What problems are you having?
Pump, steering,???

Volkswagen Jetta... | Answered on May 27, 2020


Remove battery for 20 min then refit.
Be careful to fit earth terminal last and be direct with it.
Don't leave keys in ignition or in car

1991 Volkswagen... | Answered on May 27, 2020


Wow, really.
What can you need other than ignition and lighting.
Google any motorcycle site and find one to adapt.

Volkswagen Cars... | Answered on May 27, 2020


Three different faults. Get a competent person to carry out a diagnostic test to verify the faults.
Probably a faulty door lock unit, faulty horn and rear wiper motor fail due to water ingress.

Volkswagen Cars... | Answered on May 27, 2020


how did you test for spark if it doesnt turn over recheck wiring and connections as well as a dead battery

Volkswagen Cars... | Answered on May 22, 2020


There is no place to add power steering fluid as the car uses an electronic power steering system. If a problem arises, you would have to repair or replace the "power steering pump."

2007 Volkswagen... | Answered on May 21, 2020


This is such an old thread but if you or come one else has stumbled back upon this thread:
When you pull the fuse panel cover off of the drivers side and you see the fuse panel, if you look directly above that panel mount you will see a small-ish hole that goes to the internals of the dash. When you get a flashlight and look in there you will see a relay panel and the closest one to you will be the 384 relay. Most are numbered on a VW/ German Engineered autos but if not that is where it'll be.

Volkswagen... | Answered on May 20, 2020


You do have a fuse diagram already available in your car-it is printed on the inside of the fuse box cover. However, if you can't find it, follow this link: https://www.autogenius.info/volkswagen-jetta-2003-2009-fuse-box-diagram/

Volkswagen Jetta... | Answered on May 20, 2020


If your low beam is not functioning even though the bulbs are fine, you may have a faulty fuse. To replace fuse - open the fuse box and locate fuse number 20 for right side headlight and fuse number 21 for left side headlight. Both are 15 Amp fuses, and a simple replacement can do the trick. To know more about what fuses your car has, what they do, and where they are located, follow this link: https://www.liveabout.com/volkswagen-jetta-fuse-map-4686424

Volkswagen Jetta... | Answered on May 20, 2020

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