Question about 2002 Volkswagen Jetta TDI

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Ecu programing how to reprogram a new ecu on a 2002 vw jetta

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Has to be done at a dealer. Special tool needed.

Posted on Feb 12, 2009

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How to reset ecu on VW jetta 3 1997


You need a scanner to reset it, DO NOT DISCONNECT THE BATTERY, you will lose functions and a expensive trip to the dealer is needed to reprogram the system to function again.

Aug 12, 2016 | Cars & Trucks

1 Answer

I have a 2002 VW Jetta 1.9l turbo w/automatic tranny I want to change it to a 5 speed manual transmission. I have a 5 speed transmission from a 2000 Jetta 2.0l. Is it going to fit in my 2002 Jetta?


The electronics in the auto and manual cars are different (and complex)and it is not just a matter of pulling out the auto and installing a manual box and clutch as you would in a car from the 1970s.
You will have numerous problems if you attempt the install like this.
You would need a box from a 2002 model and you would need to change the ECU and wiring harness and numerous other items also from the 2002 model..

Jan 01, 2016 | Cars & Trucks

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2006 VW Jetta code U0100


This problem is with ecu / ecm= engine control computer. These are a common and horrible problem on vw's, particularly on tdi's. The signs in a tdi are when car dash lights come on, but no glow plug light,trans gear lights flash, but car still tries to crank. And hopefully ecu has enough power to out out code u0100= no communication with ecu. Unfortunately the ecu will need to be replacd. The ecu is located under the hood, near and under the wipers. Used ecu with same codes run $50-200. New $1000. If get used one make sure has a return policy. codes must match production quarterly year.

Apr 14, 2013 | 2006 Volkswagen Jetta

1 Answer

Replacing the ECU on a 1999 VW Passat Sedan 1.8 Turbo


if u have an electronic key than security codes from ur key must be programmed into the ecu to match-- most ecu change overs on cars usually require a trip to the dealer so they can install their programming most auto shops dont have the funds to, or customer base to spend thousands [every auto maker has their own software and update and change every year]-- every year on reprogramming software for ecu-- they may do only 1 or 2 a year

Mar 01, 2010 | 1999 Volkswagen Passat

1 Answer

Hi:i have volkswagen(golf.2002)1400motor i have problem in ecu am change but i want to programmed this new ecu to code. my email:eng_haniwahid@hotmail.com


to code the ecu you need a vas-5051 scan tool with internet connection and vw-dealer credentials. aka only the dealer can do this.

Feb 25, 2010 | 2005 Suzuki XL-7

1 Answer

Is there a anti theft reset 2002 vw jetta


DEALERSHIP HAS TO FIX IT.ANY TIME YOU HAVE PROBLEMS WITH ANTI THEFT SECURITY SYSTEM THE DEALERSHIP HAS TO REPLACE AND REPROGRAM CAR.IT COULD BE KEYS WORN BAD OR IGNITION SWITCH AND PCM CANT RECOGNIZE KEY.THE CAR WONT CRANK.

Oct 22, 2009 | 2002 Volkswagen Jetta TDI

2 Answers

2002 VW Jetta 1.8 Locked my key in the trunk and now can not open up the vehicle... is there anyway to unlocked the care


there is 2 options , 1 use a cone cutter and cut a 25 mm hole in tail gate below where your number plate is . op 2 remove covenience ecu and power up tailgate switch obviosly this is not possible if all doors are locked

Aug 09, 2009 | 2002 Volkswagen Jetta TDI

1 Answer

Code po234 overboost condition 2002 jetta tdi


Don't know much about VW but if it's fine, and it doesn't happen again I wouldn't worry about it. If it does try resetting the ECU by removing the battery terminals and touching the positive lead(red wire) to the negative battery post. It might spark a little, this is just the capacitors discharging, resetting your ECU and starting over. It's like restarting your personal computer

Mar 21, 2009 | 2002 Volkswagen Jetta TDI

6 Answers

Electronic immobilizer


i recently had the problem with the immobilizer after mo 03 jetta battery had died after speaking with the dealer they said i would have to tow it to them. yeah a 160 miles after reading several blogs i put the battery charger back on put the key in the ignition and turned it to the on position and left it for @ 20 minutes when i returned the immobilizer light was out i then cycled the key off and back on the light came on then went out as it should then proceeded to crank the engine over and it fired without problems and seems to be fin now......curse greedy dealers

Aug 17, 2008 | 2002 Volkswagen Jetta TDI

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