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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

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 October 13th, 2003, 07:36   #1
Viz
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Join Date: Nov 2001
Location: Vernon, NJ
Default Immobilizer - 2002 Jetta

Jumped back into the car after a brief stop Friday evening. All the dash lights light up after inserting the key, including ones I've never seen before. Temp and fuel gauges rolled full right, then full left, full right, then left, then stopped. Immobilizer light was on (although I didn't see this at first). Car would start, then die. The usual immobilizer woes. Further attempts were futile, only succeeded in aggravating me, and changing the dash display to "lights out" at times before starting, then it dies again.
VW 24 Roadside Assistance had me try to flip the key (NG) and try my other keys (all 3 keys did the same thing). So they had it towed to the dealer where they'll look at it this morning.

No idea why this crapped out, but I know it's not uncommon. An even bigger mystery though is why did both the odometer and trip odometer suddenly change displays? The odometer suddenly rolled up an additional 10,000 + miles !!!!! And the trip ododmeter would flash " def. " when I'd try to start it.

Any clues as to what's going on, both with the immobilzer and even scarier, the odometer? Does this indicate that the ECM's memory for the actual, accurate mileage on the car is now corrupted ? I already alerted VW and the dealer that this is to be looked at before the attempt to reprogram anything.

Viz
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Old October 13th, 2003, 08:25   #2
weedeater
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Join Date: Mar 2001
Location: Reston, VA
Fuel Economy: 54/43/38
Default Immobilizer - 2002 Jetta

Sounds like the cluster went south. Those dial movements are diagnostics.

How many miles?

A low/dead battery can do this. Or a loose connector/broken wire.
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Old October 13th, 2003, 08:43   #3
Viz
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Join Date: Nov 2001
Location: Vernon, NJ
Default Immobilizer - 2002 Jetta

Car has (legitimately) just under 17,000, odometer rolled to 27,000 +. Battery has been ok, although I didn't check it. No one has monkeyed around with any wiring, including me. No word yet from the dealer.

Any idea if the stored mileage (the 16K) gone ?

Viz
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Old October 13th, 2003, 10:15   #4
scooperhsd
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Join Date: Aug 2003
Location: Youngsville, NC
Fuel Economy: 39/36/33
Default Immobilizer - 2002 Jetta

I think the car stores it in a couple different places for precisely this reason. Your trip odometer maybe be gone for this trip though the regular one should come back after the proper repair.
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Old October 13th, 2003, 11:46   #5
Papachristou
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Join Date: Apr 2003
Location: Memphis, TN
Default Immobilizer - 2002 Jetta

maybe the dealer can find out the actual mileage, but i had a 98 nissan frontier with digital dash, i went to the junkyard and bought a new cluster (with a tach which i didnt have) and computer, this way my miles always stayed under 36k, dealer never said anything and even worked on some of the area around the dash so you might be SOL, if the cluster is out the dealer will put in a new one and adjust the mileage to where it should be so they might can keep it from the 27k
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Old October 13th, 2003, 12:10   #6
VWWV
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Join Date: Sep 2003
Location: Florida and WV
Fuel Economy: 48hw/36town
Default Immobilizer - 2002 Jetta

papachristou, when my cluster went south and I paid the $4C to have it replaced, the dealer didn't adjust the milage. They said that the mainframe info at VWOA would show the milage at replacement and this would be consulted for warranty considerations.
My odometer now shows 6700 but the actual is 66,000. If it doesn't, wouldn't that be nice? I probably won't make the 100K before 2006, anyway, so it is acedemic for me. Good luck with the cluster. Somewhere on this forum somebody told me that "they aren't making the clusters for my 96 Passat anymore". If mine goes again, I guess I'll be looking for a junkyard. Regards to all of you. I'm learning something every day.
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Old October 13th, 2003, 12:13   #7
weedeater
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Join Date: Mar 2001
Location: Reston, VA
Fuel Economy: 54/43/38
Default Immobilizer - 2002 Jetta

It switched to displaying KILOMETERS.

17000 MILES =~ 27000 KILOMETERS.

Some kind of electrical glitch (loose connector? overvoltage? whatever) caused the cluster to reset and change modes. This should be easily resetable with a VagCom. [img]/images/graemlins/smile.gif[/img]
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Old October 13th, 2003, 12:26   #8
Thom
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Join Date: Dec 2002
Location: Willamette Valley
Fuel Economy: Better than gas
Default Immobilizer - 2002 Jetta

Did you check the harness for coolant migration? That's been known to fry a cluster or two.
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Old October 13th, 2003, 14:29   #9
PlatinumGLS
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Join Date: Jul 2003
Location: Las Vegas, NV
Default Immobilizer - 2002 Jetta

This just happened to some girl with a 2002 Jetta over at vwvortex...the dealer replaced a few things including the ECU. Total was something like $900...that's all I remember.
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Old October 13th, 2003, 16:13   #10
Viz
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Join Date: Nov 2001
Location: Vernon, NJ
Default Immobilizer - 2002 Jetta

Where would I check the harness for coolant migration?

Re: Kilometers now displaying. I never thought of that. The actual mileage "was" 16,994. Odometer displayed 27029. If it was kilometers, shouldn't that read 27,344 ?
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Old October 13th, 2003, 16:29   #11
weedeater
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Join Date: Mar 2001
Location: Reston, VA
Fuel Economy: 54/43/38
Default Immobilizer - 2002 Jetta

Open the hood. Find the coolant reservior. Look for an electrical plug on the resevoir. Remove it and check for wetness around the pins.

Distance is stored in the cluster as kilometers. It is converted for display. The conversion is not exact.
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Old October 13th, 2003, 23:52   #12
PlatinumGLS
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Join Date: Jul 2003
Location: Las Vegas, NV
Default Immobilizer - 2002 Jetta

Found the thread: http://forums.vwvortex.com/zerothread?id=1051936
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Old October 14th, 2003, 12:25   #13
Viz
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Join Date: Nov 2001
Location: Vernon, NJ
Default Immobilizer - 2002 Jetta

2 days of phone calls to the service department, with no reponse. Finally reached the service manager and was told the entire instrument cluster is being replaced (when the new one arrives in the morning). Does this make sense ?
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Old October 15th, 2003, 21:43   #14
tadc
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Join Date: Apr 2001
Location: Stumptown
Fuel Economy: 45/42/37
Default Immobilizer - 2002 Jetta

[ QUOTE ]
Viz said:And the trip ododmeter would flash " def. "

[/ QUOTE ]

"def" as in defective. [img]/images/graemlins/tongue.gif[/img]

The odometer (only when new) can be set one time and one time only. Weird that VWWV's dealer didn't bother.
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