S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

2000 S430 wrong mileage 999 999km!!

Old Jan 19, 2020 | 09:15 PM
  #1  
Benoit Fournier's Avatar
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2000 S430
2000 S430 wrong mileage 999 999km!!

Hi! New member here.
I just bought a S430 and I repaired a lot of things on the car. I've been a mechanic for nearly 20 years, domestics and imports ( I'm from Canada ) and I just want to know if this happened to somebody.

To put you in context, here's what I did:

The car didn't crank. Dead battery. Replaced battery, still no crank. Repaired the starter. Now cranks, but no start. Scope the crank sensor, no signal. Change the crank sensor, BOOM, I have a working car. I look at the dash, 999 999km... impossible. Scanned the data from the ICM, 146 000 km. Unplugged battery, unplugged dash, erase dtcs, nothing's changed, still 999 999km.

Other than replacing the ICM, do you guys have another idea? Did it happen to somebody? And, before you ask, no, I didn't try to mess with the mileage.

Thanks
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Old Jan 20, 2020 | 10:59 AM
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From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
IIRC, I read that on the pre-facelift cars, the mileage is recorded only in the ICM, and if you drive the car for a while, the mileage will self-correct on the odo..
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Old Jan 20, 2020 | 03:17 PM
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Originally Posted by wallyp
IIRC, I read that on the pre-facelift cars, the mileage is recorded only in the ICM, and if you drive the car for a while, the mileage will self-correct on the odo..
yes it should correct itself after driving
but if the instrument cluster has been swapped it may never show correct mileage
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Old Jan 20, 2020 | 06:27 PM
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Benoit Fournier's Avatar
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2000 S430
I haven't changed the cluster and I drived 80 km since I changed the battery. Is there a relearn or a hard reset I can do?
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Old Jan 20, 2020 | 07:47 PM
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Originally Posted by Benoit Fournier
Hi! New member here.
I just bought a S430 and I repaired a lot of things on the car. I've been a mechanic for nearly 20 years, domestics and imports ( I'm from Canada ) and I just want to know if this happened to somebody.

To put you in context, here's what I did:

The car didn't crank. Dead battery. Replaced battery, still no crank. Repaired the starter. Now cranks, but no start. Scope the crank sensor, no signal. Change the crank sensor, BOOM, I have a working car. I look at the dash, 999 999km... impossible. Scanned the data from the ICM, 146 000 km. Unplugged battery, unplugged dash, erase dtcs, nothing's changed, still 999 999km.

Other than replacing the ICM, do you guys have another idea? Did it happen to somebody? And, before you ask, no, I didn't try to mess with the mileage.

Thanks
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Last edited by pmercury; Jan 21, 2020 at 12:15 PM.
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Old Jan 20, 2020 | 08:26 PM
  #6  
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2006 S430 AMG
Are you trying to sell the car? I would live with that...heck, learn to live with a lot of little things bad

Welcome to the club!
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Old Jan 21, 2020 | 12:08 PM
  #7  
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Mercedes-Benz S430, S500, S600, and E320 CDI
You have a 2000 S430, i. e. a pre-facelift car. I had to replace the instrument cluster on the wife's 2000 S500 as well. STAR/DAS allows you to reprogram the instrument cluster mileage to the correct reading.
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