2003 VW Jetta Charging problem

Question moved from Spanish car maker 'Seat' to Volkswagen Jetta.

Volkswagen Jetta (2006) - fuse box diagram - Auto Genius

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Sept 23, 2019 - Instrument panel ; 32, Fuel Injectors (gasoline), 10 ; 32, ECM (diesel), 15 ; 33, Headlight washer system, 20 ; 34, Engine control elements, 10.

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  Volkswagen Jetta (2003 - 2009) - fuse box diagram - Auto ...

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  Jan 28, 2020 - Volkswagen Jetta (2003 - 2009) - fuse box diagram. Year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009 ...

2006 Jetta Fuse Box Diagram in 2021 - Pinterest

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2006 Jetta Fuse Box Diagram Volkswagen Jetta 2008, Vw Jetta Tdi, Jetta Wagon,. T. Tyrese. More information. Volkswagen Jetta 2008 · Vw Jetta Tdi.

The battery warning light means the alternator is not charging the battery. And the check engine light is probably for the same issue.
Have you had the charging system checked ?

something is draining your battery, I would take it to an automotive electric mechanic .

Check your battery charging rate. A possible alternator or battery failure.
If the battery is charging at around 14volts, then replace the battery.
If its charging anywhere below 13.5, then replace the alternator.

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

Bleed the coolant system.

this does sound like a bad alternator,have the battery tested and check the connection at battery and positive feed cables form battery,next time all the lights come on have the charging system check dont remove alternator,also make sure the power cable to alternator is good,ive had a few of these they get hot and dont charge, have them tested and they tell me its good, put it back on car and customer is back again,i replace the alt and problem solved. hope this helps.ps check the alt fuse.

On Diesels, Yes.

SORRY TO TELL YOU WHEN DISCONNECT BATTERY ON VOLKSWAGONS.YOU MUST USE A MEMORY SAVER.IN CIGARETTE LIGHTER.TO KEEP COMPUTER MEMORY.IF YOU DONT.YOU HAVE TO GET A SPECIAL SCANNER TO REPROGRAM CAR LIKE THE DEALERSHIP.

Replace alternator.