Lexus NX solar sensor error low heating output

Interesting issue! Are you referring to the HVAC sensor that measures sunlight to adjust the climate control? It affects the heating output and the overall system's efficiency. Is the sensor itself faulty, or is it just a connection issue? Did you measure the voltage?

Yes, exactly, the daylight sensor for the HVAC. I haven't used a multimeter yet, but that's next. I was hoping someone might know of common failure points, or if there are any known TSBs related to this on the NX.

Given the symptoms and that you haven't confirmed the sensor's functionality with a multimeter, and given the potential for a faulty cable or plug, it might be best to visit a workshop. Messing with the HVAC system can sometimes lead to further complications. For me, the repair cost amounted to 95€.

Thanks for the advice! I've booked it in at the workshop to get it sorted. They've quoted around 95€, so that matches your experience.