Help California expert garage wanted

[P6YRK]

Help! Looking for a Cali garage (not VW main dealer) for a few issues resolving, don’t mind travelling from York to a good recommendation but prefer near as possible? Following issues:
Internal door handle to sliding door stuck in open position and will not reset? Looking at threads it could be a cable or mechanism to replace.
Leisure battery issues, last night (first night in van for ages) and heater and fridge turned off in middle of night, 7 year old van so maybe just need replacing?
Also general overhaul/check of camping part of van, gas check and few little bits found and unsure where they go?
I have searched the threads and have googled but just want a California expert garage to resolve.
Many thanks in advance for any recommendations and hopefully we are back enjoying the vans now!