[wins76]

Just wondering what's that button (RES) on the A/C unit for and how to use it?

I tried pressing the button and nothing happends. Do I have to wait the car to fully warm up before it work?

[marcus321]

REST allows residual heat from the engine to filter into the cabin while the engine is off to keep the car warm without keeping it running. It's useful for people who might for example jump out of their car briefly while it's cold outside and want it to stay warm for when they return shortly after, or for people who need to sit waiting in their car for a short period of time.

A car thats barely heated up wont have much residual heat left so it doesnt do much in that scenario.

[SteveMD]

Residual Heat Mode?

See here: http://screencast.com/t/0pmW3h1E

[cmyk]

It lets RESidual heat from the engine through the vents, keeping the cabin warm while the engine is off. Handy when you're waiting on someone and don't want to keep the car running. IIRC this button was replaced by the ALL control in later models, which sets both sides of the climate control to the same temp.

ETA looks like a couple people beat me to my response Damn slow typing on my phone haha

[Infidel]

I believe what you are talking about is the REST button, I forget if it says REST or RES. Either way, it is residual heat mode. What it does is (with the car off) run the fan to blow any remaining heated air from the engine compartment into the cabin for a certain amount of time. 20 or 30 mins comes to mind but I may be fabricating that thought.

An example of its use would be this: freezing cold out, you drive to the grocery store and want to keep the car fairly warm for when you come back out from shopping. You park, turn off the car, hit the rest button then go about your shopping, when you come back the car is still habitable. Could also be useful to keep a pet or passenger comfy without them having the keys i guess.

[335BBS]

Originally Posted by Infidel

I believe what you are talking about is the REST button, I forget if it says REST or RES. Either way, it is residual heat mode. What it does is (with the car off) run the fan to blow any remaining heated air from the engine compartment into the cabin for a certain amount of time. 20 or 30 mins comes to mind but I may be fabricating that thought.

An example of its use would be this: freezing cold out, you drive to the grocery store and want to keep the car fairly warm for when you come back out from shopping. You park, turn off the car, hit the rest button then go about your shopping, when you come back the car is still habitable. Could also be useful to keep a pet or passenger comfy without them having the keys i guess.

That and the heated steering wheel ....two best options available to us up here.