Hey guys, got a very weird issue, adding itself to my list of others at this point. Recently, I've noticed my regular digital Odometer, not the Trip-Odom, is not clicking past 109,600 miles. At 109,599, it resets itself back to 109,300. Every 300 miles, it just keeps rolling itself back to the same 109,300 miles. I've been hand-tracking myself since to maintain a record, and dated/logged when it began, but I really don't want a TMU issue on my hands if I ever decide to sell this Jeep (which is a thought that crosses my mind off and on every day, that old love/hate feeling...).
Anyone have ANY CLUE what could be causing this? I REALLY don't want to have to buy another odometer, and lose track of my true mileage. If anyone has any ideas or suggestions, please let me know!! Thanks
P.S.- There are no other related symptoms when this happens, it just happens religiously after 109,599 miles, without fail, and has happened easily 4-5 times now.
I would think a BCM issue . It stores the mileage , send the signal to the cluster . I don't think the cluster would be capable of doing this .
I wish my 2011 Ram had this issue . My bumper to bumper is almost expired
What's weird about you mentioning that is that the PO has had the BCM replaced 2 times by a shop with receipts in it's short life, so I can understand how the BCM could possibly be bad.
Where is the BCM located? And would a USED BCM cause an issue, like showing the mileage from the vehicle it came from? For example, if say a mechanic pulled a BCM off a vehicle with 120k, and this one has 109K in reality, when the new BCM is installed, would the Jeep then read as having 120K? If so, I wonder if maybe that happened when the shop replaced her old BCM; snagged a used one, but charged her for a new one, and thus, these issues arise. (Receipts state BCM replacement costs over $600 for parts, alone...)
What ever mileage was on the jeep it came from is what you would end up with . You can take it to the dealer , perhaps show them your odometer one day , install the BCM and return to get the proper mileage programmed into the BCM . This may still get a TMU rating
BCM is located under the cluster to the left , next to the reinforcement for the dash . Remove panel below steering column , back off 4 screws , slide it right to access 3 plug ins , one bottom , 2 on back , slide it out from there .
Because I could , and doesn't take only but 10 minutes , I swapped the BCMs to confirm . As said , mileage changes from one to the other . I did note my BCM was also changed before and has a sticker showing the date , the vin , and mileage it was programmed to . Nothing was showing on the carfax when I searched after buying the jeep .
# plug ins , easy one on the bottom , 2 on the back are tight . When pulling the panel , there are 4 clips also holding it on , 1 on the left , 2 across the top left , one down the side by the VIC , screw driver to pry out is nice but they can be just pulled out unless stuck . Over-all , you just need a fillips screwdriver and I would rate this on the difficulty level , 1 outta 10 .
Thanks for all the input guys, I guess I'll look for a similar mileage bcm from a jy zj and just swap it in and hope that cures it. My zj has a factory alarm, does the donor bcm have to be from a zj with factory alarm also for it to work correctly?
If you get a BCM from a ZJ without alarm, your alarm will not work until the alarm function is enabled. This can be done by a factory scan tool or by locking and unlocking the driver's door with key a few times. You need BCM out of 97-98 engine size does not matter.
Originally Posted by newfieZJ
We may have gotten off to a bad start , but , you are one ignorant SOB
Yes , the mileage is stored in the PCM , it's only available through a DRB scan, it is irrelevant to 99% of jeepers