I am trying to figure out which relay is for the front blower motor. anyone know?

I would suspect the speed control unit.

There would be two relay's , one for front an one for the back . And the relay would be for high speed only . And it just so happens there are two AUX blower motor relay's .
Auxiliary Blower Motor Relay C403
Left rear corner of vehicle, above wheelwell
Auxiliary High Blower Motor Relay C404
Left rear corner of vehicle, above wheelwell

Front blower motor relay - K73 top left , Six relay's at top left .


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Here's a link to the blower motor.Here's a link to the blower motor resister,it's next to the blower.Here's the the relay.Here's the switch.The Blower Motor Relay is located:Front seating area, driver side, under dash, mounted above fuse panel

The blower motor relay is located in the relay panel on the left front fender apron

since you know where the blower motor relay is for the rear, have someone turn on the switch while you touch the relay. if you feel a click then the relay is good an trying to turn the rear blower on. that would mean you have a bad blower motor or bad blwer motor resistor for the rear unit.

REPLACE BLOWER MOTOR RELAY.HOOK TEST LIGHT SEE POWER GOING TO BLOWER MOTOR IF YES BLOWER MOTOR FAULTY.IF NO POWER GOING TO BLOWER MOTOR, FAULTY RELAY, FAULTY CONTROL SWITCH OR POOR GROUND AT WIRE TO BLOWER MOTOR.

you need a blower motor resistor not a relay

I have the same Question .....WHERE is the front blower relay located? Not the resistor or the speed controller.....but the front blower relay!

1. Does the Blower work on High (or #4) only? If so then it is not the Front Blower Motor or the Relay that is bad, but it is the Resistor which is located behind the Glove box. Follow step #a. below and take out the Glove Box to access. It has 3 to 4 wires going into it. The wiring path is: Switches to the Resistor and then to the Motor.
2. The Front Blower Motor Relay is located in the IPM - Fuse and Relay Center. It is located in a box within the engine compartment. However: (restated) IF the Blower does only work on High then this Relay is good and you should only replace the Resistor Only. The Identification and Location of the Relays and Fuses is located on the back side (inside) of the IPM cover. Remove the cover. The Front Blower Motor Relay is the same Type (size and shape) as several other Relays in the panel. Switch out the Front Blower Motor Relay with a non-engine operation Relay for a function that you know works. Recheck the operations of both functions. If the Front Blower Relay now works and the other function now does not work, it was the Relay was bad and needs to be replaced.
a. Disconnect the Negative Cable from the Battery and wait at least two (2) minutes to deactivate the Airbag Sensors.
b. Remove the Glove Box.
c. Disconnect the Electrical Connection.
d. Unbolt/Unscrew the bolts/metal screws and remove the Resistor.
Installation is reverse of above.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

it would be the recister that is localated right by the blower motor it is a $40 dollar part ,it just has to screw holding it in place