Mr Jones

I’'m wondering what markets have this REST feature in the air conditioning controls and who uses it. Here in Australia it is standard, but as per the manual, “The residual heat function (REST) is only available with THERMOTRONIC automatic climate control.” For those of you that have it but have never used it or don’t know about it, it’s very useful in winter. The idea is that if you’ve been driving around in the cold with the heater on and you stop to go to the shops etc, when you stop the car and turn it off, you press the REST button. It will then make the heater blow warm air (low setting) for 30 mins. So when you get back in the car, it’s nice and warm. Also, if you stop somewhere and have to wait in the car, it’s a way of keeping the car warm without having the engine running. It monitors the battery voltage and will turn off automatically if it runs low. I find it handy in winter. The manual says, “If you activate the residual heat function at high temperatures, only the ventilation will be activated.“ so I’m assuming that in summer it would keep air blowing around the car which might keep it slightly cooler if you were coming back to the car in 30 mins or so.

zcct04

That's a great feature! Maybe there's a reason cars are more expensive down under.

On US cars, to my dismay, we don't get the REST function. Your 'REST' button says MAX on the FL cars here.

The circular control on the left side of yours is split horizontally with AUTO on top and a recirc icon on the bottom. Ours is not split and it only controls AUTO.

flubbernub

Wonder if a retrofit is as simple as swapping hardware and re-programming, probably not.

looney100

Available in the E Class in Canada. We have it on both my E63 and the wife's E250.

jmueller

You're really shafting the wife on that engine difference.

OC6.3AMG

LMFAO

looney100

Ha! They are both incredibly enjoyable cars to drive. The E250 for its unbelievable fuel economy and ride quality. The E63 for its ability to deliver G forces on command.

ZephyrAMG

LOL.....what she doesn't understand wont hurt her...