What is the box behind drive side rear wheel? A hose is leaking there. | Ford Explorer Forums

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What is the box behind drive side rear wheel? A hose is leaking there.

Jake1

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September 27, 2005
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City, State
VA
Year, Model & Trim Level
2021 Explorer XLT 4WD
I noticed some fluid on the driveway and it is coming from what appears to be a hose that goes into a box behind the left rear wheel. Fluid is dripping from one of the 4 (I think its 4) hoses that goes into this unknown box...and dripping on the exhaust pipe. What is that box...and how easy it is to replace those hoses? I have never seen that box before. The fluid appears to be brake fluid.
 



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Do you have the optional rear heat and a/c? If so that may be the heater/evaporator box. And if you're lucky, it's just condensation dripping. Can u post a picture?
 






Do you have the optional rear heat and a/c? If so that may be the heater/evaporator box. And if you're lucky, it's just condensation dripping. Can u post a picture?

It feels like brake fluid and not condensation, and I have not used the a/c--I am not sure if I have the optional rear a/c thing. I do have a separate controller up front for the rear a/c and heat. Here is a bad picture (it's storming here now and this was best shot in the rain!). You can see part of the 4 lines going into the "box", at the very top of photo-and the second one from the right is leaking....arrrghh...can't seem to post a photo! Try this.
dateposted-public

https://www.flickr.com/photos/141592415@N08/25928259700/in/dateposted-public/

dateposted-public
 






That is the rear ac and heat. The two bolted lines are the ac and the other two are for heat. Now the middle heat line looks like it is wet is that where it is leaking? If so it coolant you are feeling check the coolant overflow tank in the engine capartment it may be empty. There are other threads on leaking rear heat lines.

Edit: I reread your second post and I answered my own question. That is the heater coolant line that is leaking
 






That is the rear ac and heat. The two bolted lines are the ac and the other two are for heat. Now the middle heat line looks like it is wet is that where it is leaking? If so it coolant you are feeling check the coolant overflow tank in the engine capartment it may be empty. There are other threads on leaking rear heat lines.

Edit: I reread your second post and I answered my own question. That is the heater coolant line that is leaking

Many thanks Mike...with the nice weather today, I can get up underneath there and take care of that!
 






That is the rear ac and heat. The two bolted lines are the ac and the other two are for heat. Now the middle heat line looks like it is wet is that where it is leaking? If so it coolant you are feeling check the coolant overflow tank in the engine capartment it may be empty. There are other threads on leaking rear heat lines.

Edit: I reread your second post and I answered my own question. That is the heater coolant line that is leaking
The bolted lines are refrigerant correct?
 












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