[jgenb]

My FEH 2006 has rear a/c problem and doesn't cool down battery. I thought that problem with belnd door. But when I turned off front a/c, rear a/c works well and cooled down battery. I has 3 options to fix
1. Change Compressor because of luck of pressure.
2. Change expantion valve.
3. Change a/c and heater switch.

Which one should i do first to solve issue?

Last night I removed blend door motor, inside panel driver back side and Hose. I also kept belnd doors open. Battery cooled by air form cabin now. It works but i have service light and message. anyone has idea how to convert cooling system from A?C based to Cabin air based?

 

[RobtRoma]

I have not heard or read anything on this site regarding an issue like this before so you might not get a lot of replies.

Have you tried taking it to a mechanic? If you don't want to do that, have you tried posting your issue in any Hybrid specific message boards? They might be better able to assist you. I know Colleen belongs to one. Maybe she can point you to it.

Sorry I can't be more helpful...

 

[Colleen]

The two forums that I belong to and that may be able to assist you are:

greenhybrid.com and cleanmpg.com

Good luck!

 

[Billyk]

"rear a/c works well and cooled down battery"

The first generation Escape Hybrid does not have a dual cabin (front-back) A/C system. I'm not sure what you mean by rear a/c system works well: are you referring to the outside air brought into the hybrid battery thru the split rear driver's side window (blend door opening)?-are you referring to the air conditioning brought into the hybrid battery via the coolant lines you can see on the underside of your vehicle especially near the rear driver's side wheel?- or?

Since your dash is displaying a warning message have you tried to read the "code" via code readers that can be found cheap at Walmart for around $25.00 or so? A scanguage can also read codes and one "X-code" can be inputted to display whether you have a blend door issue.

If I am correct :worry: , the 2010 Escape/Mariner now feature internal cabin cooling to the hybrid battery. There is software involved in this process and it is extremely unlikely you can covert your 2006 to this feature.

 

[jgenb]

Yes, I am referring to the air conditioning brought into the hybrid battery via the coolant lines you can see on the underside of your vehicle especially near the rear driver's side wheel. i called it rear a/c. Coolant line get cold when i turned off front a/c and cools down battery. when i turn on a/c coolant line get warm and no cold air for battery. that is why i want to use cabin air to cool battery just like 2010 models.

 

[Billyk]

Your description indicates something is not letting the air flow rearward along the coolant lines into the hybrid battery. I don't have enough mechanical knowledge to pinpoint the exact issue but I can share information from my 2005 Helms manual.

This is from section 412-00B-20
When the high voltage battery approaches it upper temperature limite, the Traction Battery Control Module (TBCM) requests batttery cooling from the PCM. The PCM returns a sgnal to the TBCM allowing battery cooling under the proper conditons. The TBCM then monitor the the auxiliary evaporator for a temperature drop. The TBCM sends avoltage signal thru circuit 3703 to the auxiliary evaporator thermistor. The signal is returned thru circuit 3704 to the TCBM. A DTC (code) B2590 would indicate a rear air conditoning system fault. A DTC P0535 would indicate AC evaporator temperature sensor circuit failure. A DTC 2612 would indicate AC refrigerant distribution valve control circuit low. While DTC 2613 would indicate an issue with circuit high.

Somehow you got to get the codes read off of your vehicle.

 

[jgenb]

Great answer. thanks. can i use scangauge2 to read codes?

 

[Billyk]

The scanguage II can read codes but..some (silent) codes need the Ford equipment to been seen. Can you take you vehicle to an autoparts store and have them use a code reader in an attempt to see what codes exist?

 

[jgenb]

My FEH 2006 has rear a/c problem and doesn't cool down battery. When I turned off front a/c, rear a/c works well and cooled down battery. I thought that belnd door motor is not working but problem was with a/c system. No service light.

I disconnect blend door motor and blend door. Blend door motor stays connected to elictric system. I made hole indeide panel, driver back side, and hose. Battery cooled by air form cabin now. It works but i have service light and message every morning. I turn off engine start again. No more light. I will post pics soon.