Jaguar TSB #JTB00437NAS1
2015 Jaguar XF
Affected Component: ENGINE (PWS)
- Summary
- "SITUATION: POOR ENGINE IDLE QUALITY FROM A COLD START WHEN SELECTING FORWARD OR REVERSE GEARS MAY BE EVIDENT WITH VIBRATIONS FELT THROUGH THE SEAT AND STEERING WHEEL WHEN THE REVERSE OR DRIVE GEAR IS SELECTED AND LASTING APPROXIMATELY 40-60 SECONDS WHILE IMPROVING OVER TIME. CAUSE: THIS MAY BE CAUSED BY THE ENGINE CONTROL MODULE (ECM) CALIBRATION.."