U2109 on the 2018 Jaguar XJ
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| SSM73298 | 2017-10-15. Service bulletin. Issue: Technician may report one of the following conditions during or post PDI: DTC U2109-09 (Back up Battery Component Failures) During PDI it may not be possible to activate Telematics services Vehicle message centre may display "SOS Limited functionality", coupled with a DTC U2109-09 |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.