These are showing up after 10 years on 2000MY Range Rover. Intermittent heated rear window live all the time in all but sleep mode. Orange button LED's now don't work. Heated seats now intermittent. What next? New hevac is approx GBP400 but someone on Ebay is offering to repair for GBP75 using a new motherboard. Has anyone experience if these being effectively repaired in this way?
David