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-   -   Is it actually possible to roll miles back on an X5? (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/113760-actually-possible-roll-miles-back-x5.html)

Corellian Corvette 10-06-2021 06:59 PM

Is it actually possible to roll miles back on an X5?
 
Strange question but simple reason for asking.

Looking at an X5. It's been modified in very interesting ways (it's a 4.4 but has been turned into a 4.6 clone; 4.6is body kit, 4.6is seats, even heated seats which weren't originally in the car), 4.6is Exhaust.

Normally this is no big deal in fact that's why I'm interested.

Ran a Carfax and it shows a mileage discrepancy. When it moved from CA to Nevada the mileage was listed a 99,087 in 2016, but a year later in Nevada it was listed as 78,334. Subsequent reports went up linearly to current mileage shows 89,233

I've seen a lot one-off mileage issues in Carfax but this one seems stranger. There are no accident reports, no salvage reports. It shows reasonable mileage up to 99K, then suddenly down to 78K and a reasonable trend back up from there.

So that's super weird. The cluster shows no tamper dot.

So I'm of two minds. On one hand, this car has clearly had some modifications although none of them I would consider that unusual. I've swapped seats and bumpers in tons of BMW's. And if you're going to tamper with the mileage, why only take off 20K? Might as well take off 50K and really make it worth doing. To me there is functionally no difference between a car with 90K and a car with 120K.

On the other hand - whoever has done these changes did a good job. They knew enough to swap over parts from a 4.6 including heated seats - and this car has PDC, RDC, and basically every feature so they would have needed a matching cluster with ALL those features AND the heated seat buttons. So somebody smart swapped this stuff. And it's a bit suspect this happened right as the car was going to hit 100K.

So all this brings me to the key question which is, AFAIK, there is no real way to roll back mileage like this. You could get a cluster with lower miles, but you'd have the tamper dot. And I don't think you can code a mileage change in every module.

Maybe I'm wrong and someone will say it can be done, in which case I guess I should assume this had miles rolled back.

Clavurion 10-06-2021 07:36 PM

If you change both instrument cluster and LCM from the same donor vehicle there won't be tamper dot. You can check the coded VIN on the cluster from cluster hidden menu or with diagnostics.

https://f30.bimmerpost.com/forums/at...1&d=1548603883

RocketyMan 10-06-2021 07:49 PM

Quote:

Originally Posted by Clavurion (Post 1210864)
If you change LCM from the same donor vehicle there won't be tamper dot. You can check the coded VIN on the cluster from cluster hidden menu or with diagnostics.

https://f30.bimmerpost.com/forums/at...1&d=1548603883

Mmmmmm.....I don't know how true that statement is from the picture. I wrote my VIN on my donor KOMBI and my mileage is off by almost 10k with no red tamper dot. ;)

Clavurion 10-06-2021 08:07 PM

Quote:

Originally Posted by RocketyMan (Post 1210867)
Mmmmmm.....I don't know how true that statement is from the picture. I wrote my VIN on my donor KOMBI and my mileage is off by almost 10k with no red tamper dot. ;)

Yes, that's partially misleading. AFAIK only VIN discrepancy affects tamper dot.

RocketyMan 10-06-2021 08:11 PM

Yeah..I think so too. I also read somewhere that it's suppose to correct the mileage if the two are off usually taking the larger amount. That still didn't happen for me yet.

Bmwe5320023.0 10-06-2021 08:28 PM

I guess you can reprogram LCM with whatever mileage and VIN you want to match your cluster.
Cluster, on the other hand, is a lot more involved to change mileage.

Corellian Corvette 10-06-2021 10:50 PM

So my understanding is that a lower-mileage cluster can be put on a higher mileage car, and you can synchronize to the higher mileage to remove the tamper dot.

You can put a lower mile cluster on a higher mileage car and keep the lower mileage, but that will keep the tamper dot.

So I'm still trying to figure out if I have a carfax issue or someone messed with the car - seems like a lot of work to get lower mileage without the tamper dot (keep in mind this discrepancy on carfax was 5 years ago). Plus why do it on a car that didn't have that high mileage to begin with?

I mean if it were a 200K car sure maybe worth rolling back. But rolling back 20K miles at 90K doesn't seem worth the effort (if it can even be done)

RocketyMan 10-06-2021 10:54 PM

Quote:

Originally Posted by Corellian Corvette (Post 1210877)
So my understanding is that a lower-mileage cluster can be put on a higher mileage car, and you can synchronize to the higher mileage to remove the tamper dot.

You can put a lower mile cluster on a higher mileage car and keep the lower mileage, but that will keep the tamper dot.

So I'm still trying to figure out if I have a carfax issue or someone messed with the car - seems like a lot of work to get lower mileage without the tamper dot (keep in mind this discrepancy on carfax was 5 years ago). Plus why do it on a car that didn't have that high mileage to begin with?

I mean if it were a 200K car sure maybe worth rolling back. But rolling back 20K miles at 90K doesn't seem worth the effort (if it can even be done)

There's a couple of options you can do depending on how deep you wanna dig.

I would first check the VIN on all the modules to see what they're reporting via data--to see what they are reporting. Next, you can actually take out the KOMBI and it SHOULD have a sticker on it of the last 7 of VIN.

gpeterson 10-07-2021 11:20 AM

Even changing cluster mileage is not that difficult, I have done it. See https://www.bimmerforums.com/forum/s...VIN-and-coding.

Bmwe5320023.0 10-07-2021 02:12 PM

I've read through that thread a few times.
It's intimidating haha! Wish someone made a video on it


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