Freelander 2 (LR2) LED sidelights and DRL not working.

This problem has me stumped.
Both my headlight units are playing up in the same way. Which is annoying as Ive got the MOT coming soon.

The sidelights (a disk of 7 LEDS) are not working at all, and DRLs "signature strip" are working some of the time according to position of the column stalk.

Ign only or with engine ON makes no difference.

stalk setting:
OFF - no lights, no DRL
Side light - DRL on only
Headlight - DRL on + Headlight on (+/- main beam)
AUTO (in daylight) - no lights , no DRL
Have scanned with AP200 - no faults found.

As both LH and RH light units have failed together it makes me think the cause is something more central - the column stalk maybe ?? Or the CJB ??

Can the CJB be simply swapped out and replaced ??

Any advice would be grateful received.

Here is the light unit when working.

First thing is to see if any codes are stored.
No the CJB can't be swapped, as they're VIN locked to the vehicle.