I have a 2001 VW golf gti and lately I've been having a real problem with my wipers..They only work on very fast, the slow and intermittent speeds don't work, and neither does the wipers when you spray the windshield cleaner. We just replaced that whole windshield wiper control switch that is by the steering wheel thinking that was the problem but the problem still persists..The motor works so it can't be that and we tested the fuses..I'm thinking it may be the wiper relay has gone bad, it's either that or something under the wipers themselves..But I can't seem to find the relay box..When I look under the wipers, outside of my car I see a white plastic box hidden under, inside but I don't know if that is it or not. I went online and some said it was under the steering wheel on the right side under the plastic but we just took those all off to replace the switch and didn't see anything like that. Please help!

Sounds simple.
First port of call is the wiper switch and wiring to it from fuse box. The swicth especially.

Next port of call will be wiring and connections from fuse box to wiper motor. Wiper motos seems to be OK according to your fault description.

1993-2005 Volkswagen Jetta, Golf, GTI, Cabrio (A3-A4) Hatchback & Sedan Workshop Repair Service Manual - 350MB PDF

1993 2005 Volkswagen Jetta Golf GTI Cabrio A3 A4 Hatchback Sedan...

This is a COMPLETE Service and Repair Manual for your 1993 1994 1955 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 VW Jetta, Golf, GTI, Cabrio (1.8L turbo, 1.9L TDI and PD diesel 2.0L gasoline, 2.8 LVR6) (A3, A4 Platform) Hatchback & Sedan. It covers every single detail. All models, and all engines are included.

This QUALITY manual is 100 percents COMPLETE and INTACT, no MISSING/CORRUPT pages/sections to freak you out! Detailed illustrations, exploded diagrams, drawings and photos guide you through every service repair procedure. This manual can be viewed on any computer, as well as zoomed and printed. All repair procedures are covered A-Z. This manual for VW Jetta, Golf, GTI, Cabrio makes any repair job easy to do with very easy to follow step-by-step instructions & pictures on all areas of repair.

1993 1994 1955 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 VW Jetta, Golf, GTI, Cabrio (1.8L turbo, 1.9L TDI and PD diesel 2.0L gasoline, 2.8 LVR6) (A3, A4 Platform) Hatchback & Sedan
===========
Format: PDF
System: All Versions of Windows, Mac, iOS, BB, Android, etc..
Requirements: PDF Reader.
Printable: Yes

TABLE OF CONTENT (example)

GENERAL INFORMATION *

ENGINE *
engine mechanical
engine lubrication system
engine cooling system
engine control system
fuel system
exhaust system

TRANSMISSION/TRANSAXLE *
clutch
manual transaxle
automatic transaxle

DRIVELINE/AXLE *
front axle
rear axle

SUSPENSION *
front suspension
rear suspension
road wheels & tyres

BRAKES *
brake system
parking brake system
brake control system

STEERING *
power steering system
steering system

RESTRAINTS *
seat belts
supplemental restraint system (srs)

BODY *
body, lock & security system
glasses, window system & mirrors
roof
exterior & Interior
Instrumental panel
seat

AIR CONDITIONER *
air conditioner system

ELECTRICAL *
wiring diagrams
starting & charging system
lighting system
driver information system
wiper, washer & horn
body control system
lan system
audio visual, navigation & telephone system
auto cruise control system
power supply, ground & circuit elements

MAINTENANCE *
maintenance

INDEX *
alphabetical Index

1993 1994 1955 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 VW Jetta, Golf, GTI, Cabrio (1.8L turbo, 1.9L TDI and PD diesel 2.0L gasoline, 2.8 LVR6) (A3, A4 Platform) Hatchback & Sedan

WIPER ARM LINKAGE COULD BE BINDING.REMOVE WIPER ARM TO SEE IF WIPER MOTOR OPERATE SLOWLY.IF YES CHECK TO MAKE SURE WIPER MOTOR GETTING GOOD GROUND CONNECTIONS BY CHECKING MOVING WIRES .IF WIPER MOTOR SPEEDS UP YOU HAVE GROUND WIRE PROBLEM. IF WIPER MOTOR REMAIN SLOW GROUND WIRES CHECK OUT OKAY.REPLACE WIPER MOTOR.IF WIPER MOTOR RUN FAST NORMAL SPEED AFTER DISCONNECTING WIPER ARM.WIPER ARM LINKAGES IS BINDING OR NEED SOME LUBRICATION TRY WD40 SEE WHAT HAPPENS.LUBRICATION DONT HELP WIPER LINKAGE COULD BE DAMAGED.

My VW Golf gti. I have just had a service and my sevice light come on when i turn on the ignition, can you tell me how to turn it off please

there is a fan resistor which controls the speed of the fan,which is probably burnt out,should be located near the fan motor,behind glove box.

you need to replace multi function switch

a GTI has to have turbo and intercooler to be called a GTI.
So, all GTI's have turbo

the most common problem is you havn,t shut the tailgate properlly.you may have it on just the first latch in wich case the rear wiper wont work.give the tailgate a good slam to make sure its shut.

the most common cause of this is the wiper switch.

judging by the amount of km it has done i would say the rpm drive is faulty, this measures the amount of rotation in the camshaft and shows the "revolutions per minute". when this goes faulty it stops the read out on the dial, so you want to be looking for a device that measures the speed that the engine is turning, if you have, replace it and it should solve the problem