Displayed Range is Lower after Programming

Bulletin number

613514

Component

Electrical system: software

Summary

Displayed Range is Lower after Programming. After the vehicle is programmed with ISTA/P 3.53.3 (i-level I001-14-07-503), the displayed vehicle range in the instrument cluster is lower than prior to the software update. The actual range that the vehicle is capable of achieving on a full charge has not changed. The difference between the displayed range and actual range is always conservative, yet this difference varies based on driving profile. When driving primarily at highway speeds, the differnece between displayed and actual range is within a few percent of each other. When driving primarily with a low speed/city profile, the gap may widen to as much as 20% or more. In addition, the customer may notice that the vehicles range has decreased as outside temperatures have gotten colder. This is most noticeable in extreme cold climates, and when preconditioning is not used. This situation does not indicate a problem and is independent of the range display algorithm. CAUSE The algorithm that determines the displayed range, was changed with the 14-07-503 software level. The result of the changed algorithm is that the display is too conservative.

Owners of these vehicles have filed 6 complaints in the electrical category.