Question edited for clarity.
Question moved to model category.
The BCM is located behind the glove box. Open Glove box, empty contents, grab sides of box and push inward a little bit and continue to open door. Once that's done there are 2 modules back there, #1 is ECM #2 is BCM, The BCM has a yellow clip on it.
https://www.google.com/search?q=2013+Ford+Taurus.+Where+is+the+location+of+the+BCM
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I have replaced more faulty HVAC actuators that were not clicking. Those noises you speak of, may indicate a binding door inside the HVAC box causing the gears to skip and strip. These actuators receive a command from the HVAC controller and send position data back to the controller. The feedback data should be within 1 or 2 counts of the command or request. This data can only be read with a scan tool that can show live data. Your local parts store may have this type scan tool to save you from having to pay for diag. at a shop. If you have a B or Body DTC or code it may be from the HVAC controller telling of feedback error in that actuator. HVAC actuators fail often. It would not be out of line to go ahead and swap it with a new part or a known good one. Just don't plug it in until you have installed it. Most vehicles use the same part number actuator in all positions. You may pull your own mode actuator and install it on the passenger blend position as a diagnostic exercise. I would swap the suspected part with a new one and save all that wrench time. Best of Luck!
It needs to have the system pressurized and then put up in the air on a car lift to see what the source of the coolant leak is, it may be the heater core leaking as the weep hole for the HVAC system is on the passenger's side.
this is the anti-theft system that has activated thinking the car was being tampered with. it will have to be reset. not sure if this is a problem with the BCM or the car keys have a problem. you may have to contact the dealer or a shop that can re-program this circuit.
THe drive belt tensioner and the crankshaft pulley are under the power steering pump. also, the timing cover and timing chains/components on the inside of the engine.
Do you know how to test automotive electrical circuits using a DMM - digital multi-meter ?
Principles of Operation
The headlamp switch is supplied power at all times from the smart junction box (SJB). When the headlamps switch is placed in the headlamps ON position, power is routed to the multifunction switch. Depending on the position of the multifunction switch, power is routed through one of two circuits to the SJB. If the multifunction switch is in the high beam position, power is routed through SJB fuse 12 (15A) and then on to the high beam headlamps. If the multifunction switch is in the low beam position, power is routed through SJB fuses 11 (10A) and 15 (10A) to the LH and RH headlamps, respectively. Power to the multifunction switch is available at all times for the flash-to-pass feature.
Is there B+ voltage at fuse's # 11 & 15 with headlamps on an the multifunction switch is in the low beam position ? If not check for B+ voltage at the multifunction switch . Free wiring diagrams here
http://www.bbbind.com/free-tsb Enter your vehicle info. year , make , model an engine . Under system click on lighting then under subsystem click headlamps . Click the search button then the blue link .
Basic Electricity for Service Techs Ohm law Current Flow Opens ShortsElectric Testing Techniques You Need to Know
1. stabilizer link to strut nut 6 - 12 ft.-lbs;
2. stabilizer link to stabilizer bar nut 6 - 12 ft.-lbs;
3. stabilizer bar U clam bolt to body 20 -30 ft.-lbs.
