Buddy's 05 had some major issues repaired out of state under warranty at a Dodge dealer. The odometer is now incorrect (truck went into shop showing 56k, now showing 3k?!). Local dealer throwing a fit because obv. for his warranty they don't know which end is up or down anymore. What controls/tracks/monitors/sends info for the odometer? The instrument cluster, ECM, ECU, EMCC, VCC?? Possibly something they replaced that gave the truck a different odometer reading? A flash that screwed it up? I thought this crap was tamper proof? Any info or help greatly appreciated guys!

 

DESCRIPTION




An odometer and trip odometer are standard equipment in all instrument clusters. The odometer, trip odometer, and engine hours information are displayed in a common electronic, blue-green Vacuum-Fluorescent Display (VFD) unit. This VFD unit is soldered onto the cluster electronic circuit board and is visible through a window with a smoked lens located on the lower edge of the tachometer gauge dial face of the cluster overlay. The dark lens over the VFD prevents it from being clearly visible when it is not illuminated.


The odometer, trip odometer, and engine hours information are not displayed simultaneously. The trip odometer reset switch on the instrument cluster circuit board toggles the display between odometer and trip odometer modes by depressing the odometer/trip odometer switch button that extends through the lower edge of the cluster lens, just left of the odometer VFD. When the trip odometer information is displayed, the word “TRIP” is also illuminated in the upper right corner of the VFD in a blue-green color and at the same lighting level as the trip odometer information. On all models except SRT-10, the engine hours information replaces the selected odometer or trip odometer information whenever the ignition switch is in the On position and the engine is not running. The engine hours feature is disabled on all SRT-10 models.

The odometer, trip odometer, and engine hours information is stored in the instrument cluster memory. This information can be increased when the proper inputs are provided to the instrument cluster, but the information cannot be decreased. The odometer can display values up to 999,999 kilometers (999,999 miles). The odometer latches at these values, and will not roll over to zero. The trip odometer can display values up to 9,999.9 kilometers (9,999.9 miles) before it rolls over to zero. Engine hours are displayed in the format, “hr9999”. The cluster will accumulate values up to 9,999 hours before the display rolls over to zero.

The odometer display does not have a decimal point and will not show values less than a full unit (kilometer or mile), while the trip odometer display does have a decimal point and will show tenths of a unit (kilometer or mile). The unit of measure (kilometers or miles) for the odometer and trip odometer display is not shown in the VFD. The unit of measure for the instrument cluster odometer/trip odometer is selected at the time that it is manufactured, and cannot be changed. The odometer also has a “Rental Car” mode, which will illuminate the odometer information in the VFD whenever the driver side front door is opened with the ignition switch in the Off or Accessory positions.

During daylight hours (exterior lamps are Off) the odometer VFD is illuminated at full brightness for clear visibility. At night (exterior lamps are On), the VFD lighting level is adjusted with the other cluster illumination lamps using the panel lamps dimmer thumbwheel on the headlamp switch. However, a “Parade” mode position of the panel lamps dimmer thumbwheel allows the VFD to be illuminated at full brightness if the exterior lamps are turned On during daylight hours.

The odometer/trip odometer VFD, the trip odometer switch, and the trip odometer switch button are serviced as a unit with the instrument cluster

 

So since the values can be "increased but not decreased" does this mean that they could have possibly replaced the cluster with that out of another vehicle thus providing the lower values????

 

By the way, he spoke to the dealer that performed the work and they don't have everything they did itemized at the moment. And the tech that performed the work is currently out of town. So i don't know what was replaced that could have made the changes - thats what we're trying to find out. Because now the local dealer is saying they can get him in trouble for tampering with the odom?? and its supposedly a big big big mess of trouble.