How to Get Odometer Reading When Battery Is Dead

Digital motorcar odometer-> What happens if the battery dies?

• Thread starter JEDI
• Kickoff date Dec 12, 2002

Sep 25, 2001

27,702

1,519

126

• #i

My automobile has a digital odometer. where does information technology draw information technology's power? and what happens if it loses that power? will it reset to 000000?

THX

• #2

Yes, and your new auto warranty is reset back to day 1 as well.

Nada happens to the odometer. The mileage is kept in some kind of EEPROM that gets overwritten due west/every new mile y'all drive, but doesn't get erased if it loses ability. <--maybe not the nearly technically correct caption, but information technology gets the job washed.

So, no; y'all cannot disconnect the battery on your 1991 Hyundai and sell the car as new.

• #3

Originally posted by: XFILE
My car has a digital odometer. where does it depict it's power? and what happens if it loses that power? will it reset to 000000?

THX

I call back it gets reset dorsum to 1960

• #4

Ever heard of something called memory ?

• #5

Nope, simply if you drive around long enough to striking all 9's, and so the car will call back it's the year 1900 and terminate to role.

• #6

My car has a digital odometer and it never resets when I d/c the battery. I believe that information is stored in the motorcar's computer on an eeprom fleck.

Jun thirteen, 2000

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• #7

The data is saved in the computer of the car.

• #viii

Funny but a customer that hauls pizzas had a buick that was digital and when it striking 200K it reset it self back to 0 and put a piddling notch on the nuance beside the mileage.

Don't know how high any other Digital cars go?

• #nine

Originally posted by: XFILE
My machine has a digital odometer. where does it draw it's power? and what happens if it loses that ability? will it reset to 000000?

THX

Really, I can practise better than guessing. My car's got a digital odo.

I'll go out in a couple hours, disconnect the battery, look a minute or ii, then postal service pics of the upshot

• #10

The data is not saved in the ECM of the vehicle, the digital odometer has information technology'south ain retention.
Aye there are tools out there to reset/alter the mileage, but I'm non going to tell you where, it is illegal to change the actual mileage of a vehicle without doing the proper DMV paperwork.

• #11

Originally posted past: b0mbrman

Originally posted by: XFILE
My automobile has a digital odometer. where does information technology draw information technology's ability? and what happens if it loses that ability? will it reset to 000000?

THX

Actually, I can practise better than guessing. My car's got a digital odo.

I'll become out in a couple hours, disconnect the battery, wait a minute or two, and so postal service pics of the consequence

If you have a BMW I hope you saved your cloak-and-dagger codes for your radio because y'all'll need them.

<=== Drove around for weeks without a radio bc he couldn't find the security codes for his car later changing the battery.

• #12

Originally posted by: Roger
The data is non saved in the ECM of the vehicle, the digital odometer has it's ain memory.
Yep there are tools out there to reset/modify the mileage, but I'one thousand not going to tell you where, information technology is illegal to change the bodily mileage of a vehicle without doing the proper DMV paperwork.

Thats correct, just like when y'all replace a dash you take to have th onetime one turned in and put the milage either back into the new dash or list it every bit being changed.

One of the reasons I don't have a car with a Dig. nuance. E'er afraid its going to go out. And a new/reman dash is not cheap.

• #13

Originally posted by: Doggiedog

Originally posted by: b0mbrman

Originally posted by: XFILE
My machine has a digital odometer. where does information technology describe it's power? and what happens if information technology loses that power? will information technology reset to 000000?

THX

Actually, I tin do meliorate than guessing. My machine'southward got a digital odo.

I'll exit in a couple hours, disconnect the battery, await a minute or ii, then post pics of the result

If you accept a BMW I hope you saved your secret codes for your radio because you'll need them.

<=== Drove around for weeks without a radio bc he couldn't find the security codes for his car later on changing the bombardment.

Hmmm...I simply got a crappy, old Honda...but I'll check the manuals nearly taking the proper precuations before I pull this trivial experiment for XFILE

Sep 25, 2001

27,702

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• #xv

i know that disconnectin the main battery wont practice anything.

i'yard assuming that the digital odometer has it's own powersource, much like a computer'southward bios.

so it's burned into eprom huh? hm..where's my eprom writer?

• #16

You may beable to reset your odometer simply the calculator in the motorcar keeps track of your miles. Heard virtually someone that used a switch to plough off thier instrumentation cluster (ie no gas guage, no speedo, no odo, etc.). It worked when the switch was off the odom didnt annals. However, when they went to turn in the motorcar the dealership was giving it the once over they used one of thoes fiddling handy computer things to check out the cars figurer and the odoms didnt match. They permit him keep the car rather than sending him to jail.

• #18

Originally posted past: deftron
Ever heard of something called retentivity ?

nope

• #19

its stored in an eeprom, probably within the judge cluster itself. If you want to reset your odometer, y'all'd have to pull out that eeprom and do some hacking.

Aug xxx, 2000

26,497

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• #22

Originally posted past: Marlin1975
Funny simply a customer that hauls pizzas had a buick that was digital and when it hit 200K it reset it self dorsum to 0 and put a little notch on the dash beside the mileage.

Don't know how high whatsoever other Digital cars become?

Another quality GM production

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Source: https://forums.anandtech.com/threads/digital-car-odometer-what-happens-if-the-battery-dies.943681/

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