HOSE 2647808 - Caterpillar

lithium battery is contained inside the main module of the VIMS. The internal battery prevents the loss of stored information. An example of the stored information is the payload data. The internal battery also retains the time and the date.If power is removed from the main module of the VIMS, the internal battery will begin to retain the stored data. Power is removed from the main module of the VIMS when the battery disconnect switch is in the OFF position. The internal battery retains the time and the date when the engine start switch is in the OFF position. This will occur regardless of the position of the battery disconnect switch.Note: To prevent the loss of stored information, replace the internal battery at the service interval. If the ambient temperature is continuously in the range of 0 to −40°C (32 to −40°F), cut the service interval in half.Note: If the Vital Information Management System (VIMS) detects a failed battery, a fault code will indicate that the battery needs a replacement. If power is removed from the main module of the VIMS during this fault code, loss of the stored data can occur within several hours. The lithium battery fails quickly. When the fault code is present, immediately download the stored data. Then replace the internal battery without turning off the engine start switch or the battery disconnect switch.Note: If ECM BKUP BATT ERR is displayed in the message area of the VIMS, do NOT turn the engine start switch to the OFF position. Go to Step 3.
Stop the machine and turn off the engine. Leave the battery disconnect switch in the ON position.
Turn the engine start switch to the ON position or turn the keyswitch for the VIMS to the ON position.
Use the service tool for the VIMS to download all of the stored information. The service tool for the VIMS is not part of the machine. Failure to perform this step may result in the loss of stored data.
Leave the engine start switch in the ON position or leave the keyswitch for the VIMS in the ON position. Leave the battery disconnect switch in the ON position. Note: If these switches remain in the ON position during replacement, the date and the time of day are less likely to require programming.
Remove the battery from the back of the VIMS module. Note: Do not allow dirt or water into the opening. Keep the area clean.
Install a new internal battery. Be careful to align the pins of the new battery with the sockets.
Check the O-ring seal. Tighten securely against the housing.
The real time clock format in the main module is powered by this battery. A dead battery will cause the date to be lost and a dead battery will cause the time to be lost. After the battery has been replaced, the date will default to "01/01/00". Also, the time will default to "00:00:00". If necessary, use the service tool for the VIMS to set the time and the