Replaced the cabin filter and took the opportunity to rod the plenum drain.. Was bone dry in there, but the filter was disgusting!
Replaced the air filter with a nice new K&N one
Greased up the bonnet release cable connector box and added ziplock ties to the cable outers.
Cleaned and sprayed underseat airbag connectors with switch cleaner and resolved the airbag fault warning light.
Tried to work out why HRW doesn't operate. Relay functioning ok. Power to relay present when switch operated. All fuses ok, but appears not to function at all. Think I may need to dig into wiring at the back - any suggestions?