...POWER that he knows should be there, but it just isn't.
UMMM...we did not know there was a problem with acceleration. We figured that out the last time it did it. All indications were a glitch with our camera. Even the dealership that we took it to said that is what the codes showed. So driving it NOT knowing there was a problem with acceleration was our choice. Once we figured it had to do with acceleration we limped it home AND STAYED UNDER 4000 RPM. Because at that time we were closer to home and our dealership than anywhere else.
So where does the POWER in question supposed to come from if the fault prevents the engine from producing the said power?
This particular fault has obviously not being identified during development and testing. Hope they either fix the hardware, or develop a special cases for different perceived faults like this one, and user inputs.
I bet that, let's say, sudden complete injector or coil failure will result in immediate limp mode. Given all available sensors inputs the computer can determine the normal driving mode and go into limp, or the panic and provide emergency maximum power by shutting faulty cylinders. But then again, for how long, what to sacrifice, etc.
I'm sure it's impossible to identify ALL potential faults and have special case for each. Hence, all OEMs default to just a limp mode.
That was part of the reason why I was doubting your story at first, because your car went into limp mode 3 prior times and yet you wanted to zoom past a huge truck that was going too slow for you . Going into limp mode indicates a serious problem whether the camera caused it or not.
Man, everyone agrees that the human life and well being is more important then the machine. You just can't accept that this particular falul, and many others prevent the engine from producing the needed power, limp mode or not.
That was part of the reason why I was doubting your story at first, because your car went into limp mode 3 prior times and yet you wanted to zoom past a huge truck that was going too slow for you . Going into limp mode indicates a serious problem whether the camera caused it or not.
I surmised that in your original posts, Hawks. I never got the impression that you were seeking sympathy or bashing Mazda. Dont worry about him, lol. Doesnt recognize a PSA when he sees one.
In this case, the POWER would have been there except for limp mode. Limp mode should not CAUSE a power loss, it should be a response to a dangerous condition. If it's an unexpected/unknown error, it should not default to limp mode. There should be intermediate steps that do not CAUSE a sudden unexpected change in the performance of the car.
Safety of the driver/preventing unnecessary wrecks has got to take priority over protecting the machine.
I bought a 2019 CX-5 Touring on Feb 28th, 2019. In light of OP from Go Hawks(BTW..thanks so much Go Hawks for sharing your story), I am very concerned. I hope a corrective action was taken place before they sold me the car. I was not a fan of CD(though love everything else about the car), but took a chance and now came across this story.
I have a question for everyone. Does CD really kick in even when you are in Sport mode? I would think not because when you are in Sport mode, it holds rev high, giving you immediate power when needed, let you drive a little more aggressive and have some fun...so why the need to activate CD? I would think once you decided to drive in Sport mode, you are not looking to save gas. Mazda informed you in the Owner's Manual that if you drive in Sport mode, it will negatively affect MPG. So in a way it is saying that we can't promise you the advertised MPG if you drive in Sport mode. In that sense, there is no need to engage CD in Sport mode (this is just my own theory). If we can confirm CD is not activated in Sport mode, we can drive in Sport mode to stay away from potential CD troubles.
I thought the turbo engines didn*t use cylinder deactivation? Wasn*t that mentioned in an earlier post?
No, 2.5T doesnt have cylinder deactivation. OP、jjm86m、Tran7270, etc. all have naturally aspirated 2.5L on their 2018/2019 Mazda CX-5 Grand Touring/Touring which does have CD.I thought the turbo engines didnt use cylinder deactivation? Wasnt that mentioned in an earlier post?
CD only engages when there is no engine load at approx 20-50 mph.
Mazda CX-5's cylinder deactivation operates only at sustained cruising speed between 25 mph and 50 mph (40 km/h to 80 km/h).
And:Cylinder deactivation is more effective at low speeds, improving fuel economy by some 20% when driving at a constant 40 km/h, and by about 5% at a constant 80 km/h.
AMEN shadonoz! my thoughts exactly. And I bet it would be any Mazda engineer or technician's thoughts if they experienced what myself and others have experienced! In fact my dealership told me I had to take the vehicle after they recal'd the camera and we argued about the car being unsafe to drive. When I returned 15 minutes later with the video of it doing it again, I asked them to have a technician go with me on a drive and I could possibly demonstrate what was happening. They refused because all of a sudden the car was unsafe for the road!!!
Good question, about CD when in sport mode. Idk. However, running in CD isn't the problem. Having defective software or part in the CD system caused the problem, based on reading this thread and the service bulletin.