Fixing the Jaguar start/stop glitch

Jan. 2, 2024
2014 Jaguar F-Type, 2013-2014 XF and 2013-2015 XJ vehicles with gasoline engines may notice the engine hesitate after an Auto Stop/Start event.

This bulletin applies to 2014 Jaguar F-Type, 2013-2014 XF and 2013-2015 XJ vehicles (all gasoline engines). The engine speed may “dip” or the engine may hesitate after an Auto Stop/Start event. This may be caused by a PCM software calibration issue.

Using a Jaguar/Land Rover-approved diagnostic tool with the latest DVD (146.02 v.243 or later) and calibration file, reprogram the PCM. Jaguar recommends using a Midtronics battery power supply connected to the vehicle battery during module programming.

  1. Connect the Jaguar-approved Midtronics battery power supply to the vehicle battery.
  2. Turn the ignition ON (engine off)
  3. Connect the Jaguar/Land Rover-approved diagnostic tool to the vehicle and begin a new session.
  4. Follow the on-screen prompts, allowing the tool to read the VIN, identify the vehicle and initiating the data collect sequence.
  5. Select Diagnosis from the session type screen.
  6. Select the Selected Symptoms tab and then select Powertrain-Engine system-Engine performance-Engine speed dips, or Powertrain-Engine system-Engine performance-Engine hesitates.
  7. Select Continue.
  8. Select the Recommendations tab.
  9. Select Run to perform the Configure existing module – Powertrain control module option.
  10. Follow all on-screen instructions to complete the task, ensuring that all DTCs are cleared.
  11. When all tasks complete, select the Session tab and then select the Close Session option.
  12. Disconnect the diagnostic tool and battery power supply.
About the Author

Motor Age Staff

Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored. 

Sponsored Recommendations

Variable Valve Timing (VVT) Training Series

Almost every new vehicle is equipped with VVT technology. This video explains the weak points in OE designs and gives you a complete overview of the replacement options available...

Cam & Crank Sensor Training Series

Today's advanced engines depend on accurate and consistent information from cam and crank sensors for performance, fuel economy and emissions, and not all cam and crank sensors...

Buying Your Next Diagnostic Tablet

When you last invested in a diagnostic tablet for your shop, did you consider it a potential gateway to increased revenue? Probably not. It’s likely you viewed it as a necessary...

Access Carside OEM Repair Data with MOTOR TruSpeed

Now available on all Autel MaxiSYS Ultra Series tools, MOTOR TruSpeed Repair delivers expanded OEM service and repair data within days of being published by

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!