mercedesbuff

Since the weather is cold again... REMEMBER that your vehicle has a wonderfully engineered feature called REST! It makes running errands in winter almost enjoyable Just turn it on before going into Home Depot, and the car is still warm when you come back!



A few things that I've learned from previous Mercedes with REST (not mentioned in the manual):

1- If you activate REST concurrently both front and rear, then REST will shut off after 15 minutes, rather than 30 minutes.
2- You can reactivate REST, after it switches itself off, by pressing the button again. It will run for another timed cycle. Useful when you're waiting for your wife to reemerge from Target, and she's taking longer than she promised...
3- REST will automatically switch off if battery voltage drops below a certain threshold, or if coolant temperature drops below a certain threshold (i.e. no more heat available). The Germans won't let you deplete the battery so much that you can't start the vehicle.
4- While REST is most useful for heating in cold weather, it is also usable in warm weather, in which case it draws in exterior air and ventilates the cabin. It won't cool, since the A/C is not running, but better than nothing.




Enjoy the warmth!

EWL5

Didn't know about this. Thanks!

wildta

Some people say it also helps prevent the mildew growing in the summer when running the AC if you have that issue. Although my SA said just keep AC and Auto on all time.

ksalno

Thanks, I always wondered what REST meant and now I know. I was too lazy to look it up.

wyatt88

Used today while waiting for my kids to come to the car. Thanks!

kafklatsch

Good info for those who dont know or dont use it. i use it all year round, your point about summer use being better than nothing is absolutely true. I wish it stayed on longer...It will cut off also to ensure the battery can atart the vehicle.