How remove driver side Toyota Avensis T25 air mix damper servo?tutorial

band damper motors (actuators, servo's regardless type)
you already now the heater core is 180f + hot.
even touching its 2 lines at the fire wall proved that
and OBD2 scans show ECT reads 180F so engine side is good
so then you fail to know the days has what is called heater./distribution air system.
that huge box of damper there that love to fail
even the service manual covers this.
mine even shows removing the damper motor (vac or electr)
and turn the damper hinge rod by hand to prove the damper door is not stuck if not stuck heat flows, hard. to one of many outputs called MODE dampers.
we then test the mode dampers. see why it fails.
all this is under the dash keep the hood closed or go broke throwing part not bad.
the SM service manual on line shows chapter HVAC
and covers every test to do , in all Chrysler products.
oops I see old vacuum servo motors here , actuators modern name

bad controls or bad servo's or even fell off vacuum lines
I see 2 motor servo's too, temperature damper DC motor
and mode, motor drive. called electric inlet actuator.( is Recirc )
and and AUX motor damper drive.
found the hybrid schematic for this car, the whole thing vac and electric.
https://imgur.com/a/cHq4CCY

ONE CAN WATCH EACH DAMPER MOVE OR RUN THEM BY HANDS
AND EASILY PROVE WHICH OF THE 5 FAIL.
SENSE HOT AIR IS ON THE LEFT THERE
WE KNOW KNOW VACUUM SIDE IS BAD, HE DAMPERS, STUCK
THE SERVO BAD, OR THE CONTROL PORTS TO IT ARE BAD.

EVEN A VACUUM LINE FELL OFF OR ROTTED OFF. 23 YEARS OLD

check with an online toyota parts dealer

You have two air mix control dampers; one for the driver's side and one for the passenger side that are independently controlled and operated by electric servo motors. It sounds like your a/c is operating fine since you get cold air on the passenger side. I'd suspect that the air mix damper on the driver's side is not functioning. The dealer has a tester for checking the function of all the different sensors, servos, etc. Before you do that, look under the dash on the driver's side, up to the right just under the water hoses on the side of the ventilation system. That is where the driver's side air mix servo is located. Look for wires and the connector that plug into the servo and make sure they are plugged in. They actually can get kicked loose. See if that fixes your problem. If not, then I'd leave it the dealer to replace the servo. Good luck!

https://www.toyotaownersclub.com/forums/topic/154231-remove-air-mix-damper-servo

so find out which vent is dead,?
before 5 gallon LYSOL flush an a week long GAG !
make sure first never to use RECRIC, when wanting to defog.
and is the A/C running in dash defrost mode (compressor main shaft spins)

if a vent is dead, its a bad damper valve, (not saying a part, a function)
the book is free, you can read it, HVAC. see venting and dampers.
its very simple in concept, a fan, a damper and dry air. hot.
the heater core makes heat the non recirc, damage gives you fresh air, the A/C makes that air dry. and the dampers the supply all vents work work.
so make sure the controls are set right,
then see if the upper vents all blow, with hand waved on them.
see? that is easy, and not reporting a dead vent ,makes help harder.
the FSM is on line, ill look for you.
but first HVAC 101

1. does blower work on high?
2. does the recirc turn to fresh are,and you get fresh air with blower off moving, at all top vents. y/n
3. do you have full heat? 180F + engine heat (scan tool shows this as ECT)
4. do all vents top work , blower on?
5. is the A/C compressor working in A/c mode (cold) and Defrost?
6. more... below.

Rule one, dont work in dash until air bags are DEFEATED (injury) (pull battery neg lug, and wait 1hour)

got fsm page open, ill state some facts needed to fix this.

first ill prove the dash system does not need total dismantle
for all jobs. Does NOT.
Air /mix blend door
Single Zone/Dual Zone Driver's Side(FSM)

1. Disconnect and isolate the negative battery cable.
2. Remove the instrument panel silencer from the driver side of the instrument panel.
3. Remove the three screws that secure the blend door actuator to the driver side of the HVAC air distribution housing .
4. Remove the blend door actuator from the air distribution housing and disconnect the HVAC wire harness connector from the actuator.
5. Remove the blend door actuator from the vehicle.

next page, is blend door 2, type.
has vacuum servos.
we move the controls and make sure all servo vacuum motors
work

this car has driver side and passenger side seperate blend doors.
so,,, we are getting close here>
?
if the defroster fails,(seems not) then that is electric motor drive
and very hard to test . (if not door jam)

in any case, we need to know what part is failing,
if the passenger blend is dead.
seen below,
we then must find out why
1: just stuck.
2: servo actuator failure
3: controls to #2 above bad, or connections to each.



login to alldata.com see HVAC chapter, read how it works and the tests.

on fuse panel under the dash

Instructions

1. • Drain the Camry's engine coolant, using a clean container for reuse. Disconnect the negative battery cable and wait a minute and a half for the airbag system to de-energize. Discharge and recover the air conditioner refrigerant.
     
   • 2Disconnect air conditioner suction hose and liquid pipe, then clamp on the tubes with an SST clamp. (Make sure you don't deform the tube). Disconnect the heater core hoses.
     
   • 
     
   • 3Disassemble every component of the dashboard, starting with the steering wheel and column. Removal includes the door scuff plates, cowl side trim, console panels and air bags. You'll need a second person's help to remove the dashboard from the interior.
     
   • 4Remove or disconnect all air ducts, the heater blower assembly, lower defroster nozzles, air conditioning radiator assembly. Remove the mode damper servo sub-assembly and Airmix damper servo sub-assembly, then remove the core from the air conditioner assembly.
     
   • 5Install the replacement heater core into air conditioner assembly. Reassemble all components of the heating/air conditioning unit, dashboard and dashboard components. Connect the heater core and A/C suction and pressure hoses, lubricating the O-rings with compressor oil.
     
   • 6Attach the negative battery cable, fill the cooling system and evacuate and recharge the air conditioner. Start up the engine and check for leaks in the system.
     

adam, if you want your fans to turn on, add a switch in your dash panel. there is a firewall break behind the driver side front wheel, so all wiring can be run through there. to solve the over heating, check fluid levels, replace the water pump, and just for kicks, replace the fluid and hoses. make sure there is 50/50 mixture in the coolant system that really does make a diffrence. good luck!