5 Things You Should Never Do In A CVT Vehicle

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5 Ways You Could Damage Your CVT Vehicle

Understanding the do's and don'ts of a CVT transmission requires understanding how the transmission works. There are two common types on the market, including traditional CVTs with torque converters, as well as eCVTs such as that used on the Lexus CT200h in this video. Some practices to avoid include putting the car in neutral when coming to a stop, holding yourself on a hill using throttle (if the system is clutch based), coasting in neutral, neutral dropping the vehicle for a launch, changing directions (from D to R) while the vehicle is still moving, and inching forward (if the system is clutch based).

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1) Never use a window on a CVT vehicle as a whiteboard.

George
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If you want the marker to work you must perform a windows update

getvivek
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Best thing for a CVT? Change the fluid often and before manufacturers recommendations.👍🏻 Fluid cost less than iron, everytime.

goldentrichomeshydro
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I always thought once your doing 60, you put the gear in “R” for race .

billyjack
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Put my car into D for day works well But in N for night nothing happens???

Glenm
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You said whiteboard markers dosen't work good on windows, will it work better on Mac?

ibnalfreak
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My last two vehicles were equipped with CVT. Kept the vehicle's time and distance maintenance schedule very strictly. Never had a problem with the CVTs. That's with a lot of high mileage vacation driving with short mileage commuter driving. So, I guess, keep to the maintenance schedule. I really enjoy the smooth transmission action.

rickberis
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I have one question: why did you think writing on a window was a good idea?

RydalS
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I’m not a professional driver. I tried inching forward, but not on a closed course, and my car exploded.

Bigbuddyandblue
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the one huge advantage to a cvt is the possibility of the car to drive in full speed in reverse

steventenney
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I would love to see an updated video like this concerning some of the newer CVT's and specifically the Subaru CVT used in the WRX. Thoughts, review and your usual dispensing of knowledge bombs on us poor, non-engineer types. Thanks for all the great videos!

ChasWG
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Most new CVT transmissions, as well as shifted automatic transmissions use lock-up clutch torque converters. When the input shaft of the transmission reaches a certain RPM above the idle speed of the engine, a hydraulic actuated clutch engages inside the torque converter, eliminating fluid slip loss. That minimizes heat, and maximizes efficiency. When inching, the torque converter allows slippage, with absolutely no wear, though, there is some heat. eCVT transmissions don't have any kind of clutch or torque converter. You have a single planetary gear set, with two 3 phase motors. The sun gear is connected to one electric motor, the planetary carrier is connected directly to the flywheel of the engine, and the annulus (outer ring gear) is connected to the differential. The second motor is also connected to the differential. 72% of the crankshaft torque of the engine goes straight into the differential, the other 28% goes to the sun gear, and at low road speeds, the sun gear and the motor it's connected to spin much faster than the engine. That generates electricity, which is used by the second motor, to help the engine apply torque to the differential. All ratio changing and apparent slippage is done by pulse width modulation, to control the speeds and torque multiplication of the transmission, and can transition through effective gear ratios, with no mechanical wear whatsoever
Mechanical CVT transmissions come in two types. You can get them with either a "push belt" or "pull chain". The push belt uses stacks of bits, (usually 423 to 499 bits) held in alignment by two spring steel bands. the drive sheave compresses the bits together, around the driven sheave. The moving sheaves, (called "variators") have a constant clamp force, controlled by their actuator piston area multiplied by fluid pump pressure. The "pull chain version uses a chain, that looks very much like the chain in the transfer case of a four-wheel drive truck, and the drive sheave pulls the chain from the driven sheave, just like an ordinary belt and pulley system. The clamp force on the chain is actually varied, according to the expected tension on the chain, based on engine torque, and effective ratio. It requires a more comprehensive electronic control module. The "push belt" system is more simple, and less expensive, but the "pull chain" can follow a tighter radius, therefore offers a greater ratio span than the "push-belt" type. (Typically, +/- 2.4:1 for "push-belt, +/-2.6:1 for "pull-chain") The "jury is still out" on which type will last the longest. The eCVT is the clear winner on long term reliability, compared to either of the mechanical types, but, it requires the most comprehensive control unit. It has to include two variable frequency drives, capable of handling the full horsepower rating of the engine!

vincentrobinette
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Nextime you want to try the clever door-window-whiteboard thing...Just wear a white shirt, and stand behind the illustration for the required contrast/visibility.

JoFergus
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- title says 5 things
- Jason tells us 10 things

horizon
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The Lexus CT200h is a hybrid. It utilises the Hybrid Synergy Drive as it’s propulsion System.
It allegedly has an e-CVT transmission - which is actually a planetary gear set and has almost nothing in common with the conventional CVT auto transmission.
It’s ironic that you had to have a Lexus CT200h in your video, as virtually every point you made regarding CVTs DOES NOT apply to the CT200h - or indeed the Prius Hybrid which uses an identical propulsion system to the Lexus CT200h.
Your points are valid regarding ordinary conventional CVT gearboxes - but not on hybrids using the Hybrid Synergy Drive.

Unfortunately, many will get the wrong impression and think the Lexus CT200h e-CVT might be susceptible to accidental damage, when it is not.

datathunderstorm
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When you realise he didn't write backwards but just flipped the camera.

kevman
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#11: Don't put the pedal to the metal directly after starting the engine. The steel belt will slip, which it is not designed for.

smechoj
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As Mike Finnegan said it:
R - Reverse
N - Neutral
D - Drive
B - Badass

Kiddomike
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Long time manual driver, got my first CVT about 2 years ago. I'm actually very impressed, and still don't find it boring. Maybe I'm just getting old now, but I'm still enjoying the CVT. Especially knowing I can now step on it with no issues lol.

vermontvermont
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This video should of been called “CVT is not a manual transmission”.

Shoottermcgavin