DTC U2106-03: Switch Pack Signal "B" - FM (Frequency Modulated)/PWM (Pulse Width Modulated) failures: Action

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the electrical circuit diagrams and check the touch screen switchpack illumination circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
If fault persists, check and install new touch screen switchpack as required