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Old June 22nd, 2009, 17:39   #1
Tim_Mackinlay
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Default Where is the headlight relay MkIV

The wife's 2004 Golf headlights (Low beam) quit.
The is no voltage at the light socket.
Does anyone know where the relay is located?
I see that 173 is the DRL relay, But swapping it did not make a differance.

Tim
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Old June 22nd, 2009, 17:45   #2
JASONP
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Tim, did you check the fuses?
MKIV FUSE LIST
1. Washer nozzle heaters, glove compartment light, memory seat control module (10A).
2. Turn signal lights (10A).
3. Fog light relay, instrument panel light dimmer switch (5A).
4. License plate light (5A).
5. Comfort system, cruise control, Climatronic, A/C, heated seat control modules, automatic day/night interior mirror, control module for multi-function steering wheel, control unit in steering wheel (7.5A).
6. Central locking system (5A).
7. Back-up lights, speedometer vehicle speed sensor (VSS) (10A).
8. Open
9. Anti-lock brake system (ABS) (5A).
10. Engine control module (ECM): gasoline engine (10A); diesel engine, Model Year 2000 > (5A).
11. Instrument cluster, shift lock solenoid (5A).
12. Data Link Connector (DLC) power supply (7.5A).
13. Brake tail lights (10A).
14. Interior lights, central locking system (10A).
15. Instrument cluster, transmission control module (TCM) (5A).
16. A/C clutch, after-run coolant pump (10A).
17. Open.
18. Headlight high beam, right (10A).
19. Headlight high beam, left (10A).
20. Headlight low beam, right (15A).
21. Headlight low beam, left (15A).
22. Parking lights right, side marker right (5A).
23. Parking lights left, side marker left (5A).
24. Windshield and rear window washer pump, windshield wiper motor (20A).
25. Fresh air blower, Climatronic, A/C (25A).
26. Rear window defogger (25A).
27. Motor for rear windshield wiper (15A).
28. Fuel pump (FP) (15A).
29. Engine control module (ECM) gasoline engine (15A); diesel engine (10A).
30. Power sunroof control module (20A).
31. Transmission control module (TCM) (20A).
32. Injectors: gasoline engine (10A); diesel engine (15A).
33. Headlight washer system (20A).
34. Engine control elements (10A).
35. 12 V power outlet (in luggage compartment) (30A).
36. Fog lights (15A).
37. Terminal (86S) on radio, Instrument cluster (10A).
38. Central locking system (with power windows), luggage compartment light, remote/fuel tank door, motor to unlock rear lid (15A).
39. Emergency flashers (15A).
40. Dual tone horn (20A).
41. Cigarette lighter (15A).
42. Radio (25A).
43. Engine control elements (10A).
44. Heated seats (15A).
Fuse arangements in fuse bracket/battery:
S162. Glow plugs (coolant) (50A).
S163. Fuel pump (FP) relay/glow plug relay (50A).
S164. Coolant fan control (FC) control module/coolant fan (40A).
S176. Relays panel interior (110A).
S177. Generator (GEN) (90 Amp.) (110A).
Generator (GEN) (120 Amp.) (150A).
S178. ABS (hydraulic pump) (30A).
S179. ABS (30A).
S180. Coolant fan (30A).__________________
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Old June 22nd, 2009, 17:50   #3
Tim_Mackinlay
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yes, checked the fuses. Both ok. There is full battery voltage to the fuses.
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Old June 22nd, 2009, 18:09   #4
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I knew you would, have but had to ask.

Did some searching and found also maybe the Turn/Flash/Cruise Combo switch, but no luck on the location of the relay
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Old June 22nd, 2009, 18:18   #5
Tim_Mackinlay
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False alarm, It was the bulbs. Sheesh!!! Both at once!
First time for everything I guess.

Tim
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Old June 22nd, 2009, 18:19   #6
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Quote:
Originally Posted by Tim_Mackinlay
False alarm, It was the bulbs. Sheesh!!! Both at once!
First time for everything I guess.

Tim
I did see a thread on that as well, weird
Oh well
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Old June 22nd, 2009, 19:08   #7
johnnloki
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Nothing chews up headlights faster than a mk4 golf.

I've had a pair of bulbs go in a couple of months... out of the package to landfill far too fast for my liking.

They tend to most often go pop when they're full off, and you turn on the headlights without dropping the parking brake first. Fully cold to full voltage is not so good with h7 bulbs.
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Old June 23rd, 2009, 11:31   #8
Jetta_Pilot
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That's one of the nice things about having a Euro switch. I am using an aftermarket HID kit and to extend the life of the bulbs, I only use my parking lights in the daytime. It has become an instinctive habit for me to turn the switch to the 12 o'clock position before starting the engine. Also when I shut the engine off I return the switch to 12 o'clock if I have been driving at night and then when the key is in the off position turn the switch to the off position.

The reason I follow this procedure, I have noticed the lights go off and momentarily come on again before shutting down altogether. Not too good for the bulbs.
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Last edited by Jetta_Pilot; June 23rd, 2009 at 11:33.
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Old June 24th, 2009, 09:10   #9
Toronto_Vento
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Euroswitch + rewire. I never use the headlights for DRLs anymore.
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Old June 24th, 2009, 09:27   #10
compu_85
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For the record there is no relay for the headlights on any VW up to the mk5, all the power goes through the headlight switch.

-Jason
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Quote:
Originally Posted by BRUSSELS BELGIAN View Post
Maybe I should pay MYSELF to do bad work on my car!
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Old July 7th, 2014, 21:02   #11
jnsrogers
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Default 173 relay on 2005 Jetta TDI MK IV

So I removed the 173 relay and it only has to do with DRLs? Nothing to do with my low beam headlights not working?
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Old July 8th, 2014, 15:16   #12
Jetta_Pilot
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Quote:
Originally Posted by jnsrogers View Post
So I removed the 173 relay and it only has to do with DRLs? Nothing to do with my low beam headlights not working?
Just curious why a five year old thread had to be re-opened for this ???
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