Today was pretty cold for these parts. The high was around 35 degrees. When I dorove home, about a 15 minute drive, the autostop never engaged. The engine was warm. About halfway through the drive the heater was blowing very warm air and the water temp showed about 5 bars. The climate controls were set to auto and the econ button was on.

Is it normal for autostop not to work in weather this cold?

Clay

I heard brake pressure had to be right too, although 35 ain't too cold but I guess since you wanted warm air your were taxing the engine for awhile. try turning off the fan before you stop and turn it back on when you release your foot from the brake

i got around 20 km a liter when i drove a civic 5 spd using advanced hypermiler techniques
and now I drive a salvage nwh20 prius that gets almost to 25 km/l with 195,000 km to date.

Yep. Just went through this myself with an 05 HCH. It states in the owners manual that AutoStop is disabled when the temps are near freezing.

I guess I missed that in the manual.

Ahh, but the manual lies! I found away around it. I've been able to coax autostop at 4F. Yes +04F or for those of you up north -15.6 or so C.

What is required is 1) engine is warm like normal, 2) fan is OFF not on auto or any other setting. 3) vent is on auto (I have seen it work with vent on defrost but my testing shows that its harder if the vent isn't on auto). 4) rear window defoggers are turned off.

If all these condidtions are met you can auto-stop at any temperature I have seen so far. I have an 03 so I can't speak for the 04 and 05 but I believe it to be the same.

My hydroponics experiment

You ever notice how hard it is to lip read cartoon characters?
"Crazy is what the sane call Delta Flyer"

at 4F, why would you WANT to drive like that? Given the choice between saving 12 cents on gas or the ER charges for hypthermia.....

In the literature it's called obssessive compulsive behavior.

2006 HCH Alabaster Silver w/Navi
2003 Honda Accord LX

I'm fine in my car. The car doesn't lose a lot of heat for the 30 seconds I'm at a stop sign without heat. Its about as much time as it takes me to wak to my car from my house in the morning and its a lot colder outside than in my car. I have yet to have to go to the ER for hypothermia from walking from my house to car so I'm not to concerned.

Just telling people its possible. I'll leave it as an excersie for the reader to find out otherways to keep warm for those 30 seconds the temperature starts dropping. Btw, if its 4f outside and 73 inside. How low will the temperature drop in 30 seconds? I know theres a formula out there somewhere.

BTW, read some of the threads about keeping cool with the AC off in summer. People are just showing whats possible. No one says anyone else has to follow what they do.

My hydroponics experiment

You ever notice how hard it is to lip read cartoon characters?
"Crazy is what the sane call Delta Flyer"