RaPieR

Prius has a lower drag coefficient and smaller frontal area so it takes less of a hit on the highway. I've wanted to test drive just to compare.

It might be possible to get 40. I got this over the weekend after the update and I thought it was higher than my previous trips but it turned out to be 44.2 mpg actual. This was Detroit to Toronto, Toronto to Niagra, Niagra to Toronto then back to Detroit. Had a few stretches of 70MPH but mostly done at 66MPH with eco-cruise. For reference, since June I've driven 4554 miles on round trips from Detroit to Toronto (86% highway). I've averaged 44.17 mpg during those trips using pretty much the same route up highway 401, the 14-15% city is the only part of the route that actually varies.

I've had this happen multiple times while at a stop or in traffic and cars shouldn't be close enough to set them off. The dedicated disable button is great. I've had this happen in clear weather with no rain.

Sorry but there is no way you'll get 47MPG at a long sustained 75MPH.

If you look at the engine load bar in the "Empower View" during highway cruising above 63MPH, if the engine load drops below the "1 bar" mark, EV will engage and ICE will shut off. This could occur if you're going down a hill. The car will continue to use EV even as the road levels out as long as the battery has enough power and engine load doesn't pass the 2nd bar. What I've found is instead of letting the car stay in EV and draining the battery, once the engine load passes the first bar in EV mode if you lightly blip the throttle to go pass the max load range of the electric motor the car will stay in ICE until engine load drops near the 1 mark again. By doing this, you can use EV going down hills and use high ICE when the road levels out again. The thread listed by fotomoto has more detailed information about high ICE.

Just downloaded and installed after reading about the update here. Luckily no problems whatsoever. Installed in less than 30 minutes and the interface is a lot more responsive. I like it!

That command list was there in 3.1.3 but you had to turn it on.

I've only seen this issue on a few roads. I wish this had come out earlier so it could have been bundled with the PCM and headliner fix.

Not to mention all the incentives Toyota can afford to put on their vehicles right now with the weaker value of the YEN. My dad just bought a new Camry and having the 0% interest was the main factor in his purchase.

Thanks for the info on the engine sweet spot.

Hehe, look at that picture again Jus. The "ECO" icon is enabled on the left side of the dashboard. I was running at that level for almost an hour, I can't stand doing manual feather for 20 minutes in the city there is no way I'd do that for hours on a 4 hour drive.

I've noticed the clock on my C-Max since the 3.5.1 update is two minutes slow. I don't know if it's slowing more, because I reset to the correct time when I notice. I've done this twice already.

Yep, if they really want to steal something, they will a flimsy flap isn't going to help. Here in Detroit cars have bern stolen by breaking shifters then pushing the car with a 2nd car.

High ice using eco cruise is still possible after the update.

Tried this out today. Even with higher ev threshold provided by the PCM update you can still do high ICE techinque by blipping the throttle.

Many people ond this forum have shown it can be done. But no point in taking unecessary risks. Just fill up before you get that low on the tank.

I just got the PCM update on Thursday. I drive to Toronto a LOT so I should be able to get a decent comparison of mileage before and after the update. Based on my last 5-6 trips I've driven 4554 miles at 44.MPG all at about 88% highway driving using eco-cruise at 65-70MPH before the PCM update. Usually I draft semis from around 200ft when they are driving fast enough and the temperature usually ranges from 50-80F on those past trips. Only other variables are amount/direction of wind, AC usage, and traffic. I always take the same route, Ambassador bridge then highway 401 to Toronto and take the same route back home to Dearborn. So after the update, on the first leg to Toronto today the dashboard showed 52MPG. Again this was using eco-cruise from 65-70MPH and I drafted from semis from around 200ft when possible. I used the AC set to 73F and recirc on. The conditions were around 75F with a tail wind until I was around 30 miles from Toronto where I hit heavy traffic and rain. So far the results look promising, I'll see what my real calculated round trip mileage is when I drive back with a head/crosswind. One great thing I found was that high ICE is still possible. I don't know what is the speed threshold but at 65MPH you can use high ICE as long as the engine load is above 1 bar. I found if the car is above 65MPH in EV mode and the load is above 1 bar you can blip the throttle and as long as load doesn't dip below the 1 bar threshold the C-max will hold ICE. Now about the AC. After the reprogram, I noticed that AC load on the battery varies a lot more now. At one point it had zero load. Before the update the load stayed steady at around 1 bar. The difference though is that it doesn't stay as cold in the interior as before. Prior to the update, setting the AC at 73F made the interior chilly. After the update, the car was warmer but still comfortable. I'm not sure if it's using a temperature sensor inside to determine when to cycle the compressor on and off. Sorry for the long post, but so far I'm liking what I'm seeing with the update.

I've noticed my c-max reads high when I drive on the highway and low when I'm driving in the city.

Just depends if there is no traffic I let it recharge at whatever eco sets the engine to. I think it is .4 bar if thr road is flat. I'll manually shut off eco to coast if there is traffic ahead or I expect a stop or other delay. On my daily commute I average around +50 to a high of 77 at current summer temperatures.

It'll usually keep charging the battery at .4 bar until it gets above 50% then it will drop into ev again unless there is an elevation change. You always overide as well. I use it because it's easy. All I have to do is keep an eye on traffic and lights. I find feathering the throttle to tedious. Probably won't hit extremely high mileage but I don't have to mess with the throttle my entire commute.

If you press the black "button" on the front handle you can immediately pull on the handle after you hear the doors lock to verify the doors are locked. If you have fob in your pocket all doors can unlock the car by touching the handle.

LOL you can see traffic in your picture. Thanks for sharing. In the first picture was it with a cold start-up and in the 2nd was the engine still warm? Look Mom no hands :skateboard: Don't try this at home. There was no traffic around me and I was very careful taking this picture. :camera: This of course is 70 mph on EV.

You have to adjust how much you pulse based on traffic to try to keep as constant a speed as possible. For example if a light turns green and you are close enough to pulse pass or if you're too far then you'd coast to try and time the light. If you have you to keep pulsing from a complete stop, you'll kill your mileage.

The first dealer that I took my cmax for the update replaced the apim module because the update failed. They tried again after the ao I'm was replaced and reported to me that everything was updated. Car was still on 3.1.3 and the nav now had the wrong SD card error. They took it back in and came back shortly to say it was fixed. Mft still wasn't updated correctly, so I took it to a different dealer and they got it done right the first time. Still hit and miss for most dealers because of the technical curve of these cars I guess

Main point like just-a-cmax was saying, is to use two bars to get up to speed around the speed limit then back off to kick in ev. Using eco-cruise, it goes into ev when you hit the cruise button as long as you aren't pushing the gas enough to speed up. Then you can adjust speed for traffic and lights by pressing the throttle to pulse up again or hit the cancel cruise button to coast. It's not as efficient as doing it manually especially if it is hilly but it takes only a little bit of practice and not as much concentration as manually feathering the throttle.