The touring has thrown up a temporary problem in that the heater display/ control unit works temporarily. When the display is on and bright, all controls operate as they should. Sometimes, around half the time the car is in use, the display is either very dim or out completely. On both the occasions that this occurs the controls do not operate and the system appears to be inoperable.
I guess I should remove the control unit and check the connections first as a no brainer, but what I'd like to know from people with more experience with this E36 system is whether or not this could be a known problem and if anything else could be involved with this fault. Thanks in advance.