Service bulletin LI27.60-P-076554

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

Complaint • Hard 1-2 shift • Jerky shifting • Jolting when moving off Cause Insufficient data points for the adaptation limits algorithm Remedy A software bundle has been released. Please check for available software in the VGS Control Unit. Please carry out the following: • Update all control units included with VGS Control Unit software update • Check the transmission oil level and correct if necessary • Rinse the valves 3 times via XENTRY • Perform a stationary standstill adaptation • Collect EEPROM data If the problem persists, please perform driving adaptations of the 4-5 upshift (4-5 shift adapts K81 for 1-2) at least ten to fifteen times: • Level track (no incline/decline) • Slippery drive program • Display the torque in the instrument cluster: The torque must be between 100 and 250 Nm, preferably closer to the maximum torque • Constant engine torque • Engine speed under 2500 rpm • Do not shift via paddle • Collect a new EEPROM data after all adaptions are complete If the problem persists OR this is a return visit after the software update, please create a TIPS case with the following attachments: • Initial Quick Test w/ Freeze frame data • VGS Control Unit Log • All collected EEPROM files

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

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