The repair shop said that i need to bring it to a dealership to have the blend door actuator module programmed.
Jeep blend door actuator calibration.
To calibrate the door actuators proceed as follows.
Calibrate the door actuators after making any repairs to the azc system.
If your vehicle has manual controls a recalibration is not possible or needed.
It only applies to the temperature door actuator.
5 if lights continue to flash after 3 minutes manual system or 20 seconds auto system the control unit has detected a failure.
If you happen to have auto controls the temperature door recalibration is performed as usual but the fuse will be labeled rdo batt.
If the calibration is not correct the heating a c system may experience a condition where full heating or cooling capabilities cannot be obtained.
Use this procedure to ensure that the a c heater control is correctly calibrated to the blend door actuator.
The design is inherently weak and relies on a calibration phase that puts intense pressure on the weakest points in the system.
Motor calibration procedure for jeep grand cherokee 99 04 heatertreater.
Quote originally posted by ry1820 today i just had a local shop repalce the blend doors on my 04 limited it cost me 250 which was much cheaper than the dealership.
4 calibration should take about about 2 minutes to complete if you have heater control and about 20 seconds if you have automatic temp control system.
What i discovered was this is a very common problem with my model of jgc 1999 2004.
You need a scan tool to pull the trouble codes thanks chrysler.
Fix your car s head and a c in as little as an hour and save up to 1493 in replacement parts and labor costs.
Many steps can not be done with out a real jeep scan system.