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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old March 20th, 2012, 16:53   #1
Red Herring
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Join Date: Sep 2009
Location: Victoria BC
TDI(s): 2004
Fuel Economy: http://www.fuelly.com/driver/redherring/jetta
Default ECU Location on 2003

Hi fellas.

I looked, and am pretty sure it's out there, but I can't find a thread on it... so if someone wouldn't mind telling me where i would find the ECU on my 03 TDi wagon, I would be much appreciative!

I am getting immobilizer issues, and thought the time would be good for a reflash with immobilizer delete and a little more go.

Thanks in advance!
2003 TDi Wagon. Silver/Black Leather. Tinted and spotless :~))

Now with VAG-COM if anyone needs
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Old March 20th, 2012, 17:15   #2
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Join Date: Jun 1998
Location: Sterling, Massachusetts. USA

Under the cover at the base of the windshield.
It's necessary to remove the wiper arms, and the small plastic trim pieces in the fenders near the hood hinges before lifting the cowl cover up.
If the quantity of carbonic acid increases in geometric progression,
the augmentation of the temperature will increase nearly in arithmetic progression.

Svante Arrhenius 1896

Cogito ergo soy (I think, therefore: Biodiesel)
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Old March 20th, 2012, 17:21   #3
Curious Chris
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Join Date: Jun 2001
Location: Minneapolis MN
Fuel Economy: 47/42/38

And when you get there you will find that the ECU is held in by two small strips of metal that have been pried up so the ECU won't jump out. You need to carefully flatten these out. Then I use open end wrenches on the pin lugs to wiggle it out of the track it is in.

Since you are taking it out I am a RocketChip fan and if you email him and mention my name he will respond immediately. Send me a PM and I will give you my real name.
Wavetrac LSD, Bosch 230'a with RC4.5, Whitbread 2.5" downpipe, PD lift pump, South Bend Stage 2 Endurance Clutch, steel skid plate, Wingnut inspired EGR mod, MyCruiseAgent no drill EGT, MoGolf skidplate mod
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