Control valve or inverter pump noise?

Just top off the inverter for now and that sounds like your coolant control valve or something clicking away so right next to your inverter pump on the inside of the radiator you'll see the coolant control valve put your hand on us that what's making the clicking noise usually the inverter pump doesn't make that kind of noise at all everything else sounds pretty normal

 

Is the sound louder towards the lefthand side (US driver's side) down behind the headlight enclosure?

 

That is all till pump needs replacing . Which could be awhile

 

When you change the inverter pump you leave the gold bracket in place and remove the three gold screws that hold the pump in but first you slide the clamps back off the two hoses that go to the pump this way here you're just lifting the pump off putting corks in the hose ends unplugging the pump and bringing it up to you without doing anything to the headlight using a quarter inch drive long extension a 10 mm socket and corresponding ratchet pair of long needle nose pliers to grab and undo the plug You should do all that while the screws are in so you're not pulling against the floating pump. And then you just put the new one down there and remove the cork slide a hose onto the barb remove the other cork slide the hose onto the barb put the electric connector on. Let the pump drop on the bracket apply the three gold screws throw your new bracket that you took the pump off of away or save it for a rainy day or who knows this way it makes the pump 8 minute change If you want to do the bracket there's something in your way that you have to undo from the firewall because there's other things on that stud like the coolant control valve.

 

Be aware that the CCV is in the engine coolant loop if that P1121 comes back.

P0A93 (if you get that) is about the inverter coolant loop.