I have a 2002 VW Bug diesel with 95K miles. I have it serviced according to the manual. The check engine light came on just as I was taking the car in to get it inspected. The shop said the data link wasn't communicating with the other components. He also said it would cost $500. for a new part. Your thoughts? Paul J.

this is a USA forum and we dont have that engine.
most cars is 60k, some are 90k miles. (93k miles = 153km)
the 2.0 L VW I4 (t/c diesel) turbo diesel right?
it's the VW engine.
vw: name.
1968 cc2.0 R4 8v TDI PD 47-103kW
called the 2.0 CRD on a jeep.

your, operators guide don't cover that, under normal maintenance?
odd. it does here. On most cars.
see this ?
http://www.jeeppatriot.com/forum/showthread.php?t=269570

150kmeter. belt service. ( google works for me )

any time engine replaced need diagnostic equipment to relearn PCM and TCM to engine before vechicle will run correctly.most all newer vechicle same procedure has to be done.

Codes and the CEL can be erased with the same scanner used to retrieve the codes. It is a separate function of scanners.

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

For VW gasoline or diesel engines it is recommended to use 5w-30 SYNTHETIC, but needs to meet the VW standard 50200-50500 (most if not all Mobile 1 oils do).

Scanner must be used to turn this light off almost every parts stoor will do this at no cost to you. Hey wish you were close to me that $550. looks like a good sum to pay at 40,000. I would not pay that at all. Have the check engine light turned off and drive it till it comes on again then return to the auto parts stoor and they will read the failure code and tell you what part you need.

check the fan relay

battery terminals loose?bad ground?short?

The flashing is telling you that the engine is mis-firing, the dealer will run a test to determine the cylinder that is mis-firing, chances are it is something simple

check the crank sensor