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Thanks for this. This is my first Mitsubishi..(and CVT trans for that matter). It took a few months for me to get used to it, and like you said, I drive it real easy, especially from stops. After reading all the horror stories about CVT's I was worried but there are plenty of cars out there with over 200k on a CVT, you just hear about the horror stories. And definitely change the fluid (with J4) every 30-40k. I'm doing a tranny service tomorrow as a matter of fact, with BOTH filters!CVTs in general get a bad rap for being trash or unreliable. You can get 200k+ out of a CVT, you just cannot drive it like a regular automatic. The driven pulley that rotates the output shaft of the transmission is driven by steel on steel contact on angled slick surfaces, which is brutal on the components and creates high heat. This is not like having gears/teeth engaging to transfer torque. CVT steel belts have no tensioner, the tension is all created by the variators. You need to gently accelerate CVT's, you cannot just mash the throttle they will not last. If you drive a CVT easy, calmly, avoid jerky applications of torque it will cause much less wear on the belt and variators. This will also keep the fluid from cooking which is probably the number 1 killer of the CVT. When the oil gets to hot and cooks the viscosity changes greatly, film strength is lowered. CVT fluid should be swapped out every 15-30k miles according to the CVT manufacturer, the auto manufactures who DO NOT make the transmissions will tell you its a lifetime fluid, this is objectively incorrect.
If you got ABS, ASC, AWD errors all at the same time it sounds like maybe you have some comms issues with a component or a wire is cracked or something causing the bus network to fail. Subarus with CVTs have the same failures as nissans, fords, mitsubishis etc... Toyota's like the prius have a completely different type of CVT using 2 electric motors which dont really fail. The next gen CVT's are on the horizon and it looks like to alleviate most of all the wear and heat on the CVT they are going to use a real 1st gear then dual variators for the rest of the 'gear range'.
I think in general most people just drive to aggressively, accellerate to quickly, brake to late, lack proportional throttle control etc...