DTC B10D2-23: Left Rear Lock Button - Signal stuck low: Action

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This DTC is set when the rear left door latch clutch switch is pressed for 45 seconds. If the switch is released before 45 seconds have passed, the timer will stop and the DTC will not set

Refer to the system wiring diagram(s) and check the rear left door exterior handle lock switch circuit for short circuit to ground
Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, check and install a new rear left door exterior handle lock switch as required