12 Months worth of error codes

[SwissXC90]

Time for the annual service, so I got out VIDA to keep the garage honest.

Made me realise that it's been exactly 12 months less 2 days since the last VIDA check. In that time I accumulated the following faults... which were a real surprise! I expected more:

CEM-1F00 ECM, Software Faulty signal DTC is found not active.
- due to my chip tuning. Always present. So OK.

CEM-4F47 Camera module, left Internal fault DTC is found not active.
- sporadic on a cold start at -15°C one cold winters day, occurred once in the last 83 cycles. I-m picking a low voltage power surge glitch during the tought start that day. . Always present. So OK.

CEM-8F52 Relay, headlamp cleaning Signal too low/Signal missing
- I take the fuse out in Summer to stop spraying headlamp wash on my clean bonnet. Fault present 1000 times

ECM-7700 Engine control module (ECM) - Incorrect check sum
- due to my chip tuning. Always present. So OK.

ECM-6665 Glow relay control - Faulty signal
- interesting. Occurred once in last 653 cycles. Weird.
This was also present last year with occurrence of 1 in 276 times.
I might pull the relay and clean the connectors.... although 6665 is an indication of glow plug #5... so chances are more the plug than the relay... but very infrequent so not even sure I should touch it.