18078 - Service Update. Certain vehicles equipped with a tow/haul mode activation ?On? calibration (RPO 5G8) that recently had service repairs for either; #18-NA-005: Diagnostic Tip for Instrument Panel Cluster (IPC) Low Washer Indicator Not Setting a Warning When Empty - (Jan 16, 2018) or #17466: Service Update - Timing Belt Message Displayed at 100,000 Miles (160,000 KM), Not 150,000 Miles (240,000 KM) Per Specifications - (Jan 17, 2018), may have received an incorrect instrument panel cluster (IPC) XML file resulting in the tow/haul mode telltale display to not illuminate when it is on. This does not apply to any vehicles reprogrammed on or after March 20, 2018. Dealers are to reprogram the IPC.
