Checking engine mileage against tachometer - Citroen DS4 Forums
 
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post #1 of 5 (permalink) Old 16th March 2020, 19:07 Thread Starter
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Checking engine mileage against tachometer

Hi,

I have just bought a 2011 DS4 with just 63k kms on the clock and I want to check if the engine mileage matches the tachometer

I bought a OBD II dongle and have downloaded a free app but couldn't see anything when I connected. Before I pay for the full app, will the engine mileage be found in the engine or transmission ECU?

Any help would be most appreciated
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post #2 of 5 (permalink) Old 16th March 2020, 20:41
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I'd be doubtful there is a second place it stores it, usually the odometer in the dash is the only reference

David
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post #3 of 5 (permalink) Old 19th March 2020, 22:33
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The mileage is stored in the BSI and odometer. If you replace the odometer with one with a higher mileage then the BSI will upodate to that mileage. Replacing with a lower mileage will just update the odometer to the higher miles.
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post #4 of 5 (permalink) Old 20th March 2020, 10:38
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So either way they will read the same

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post #5 of 5 (permalink) Old 20th March 2020, 13:15
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Yes they will but if you put a replacement speedo in that has a higher mileage it will update the BSI. Whatever you change you will always get the highest mileage stored in the BSI or speedo and you will not be able to revert to your correct mileage (although I bet there is some geek out there who can do it but probably not legally)

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