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Discussion Starter · #1 · (Edited)
Hi, I just bought a Tucson 2021 in Germany ( the 2022 model in USA ). The model is a 1.6 mild hybrid DCT AWD 7 gears, which in the folder is described as shift-by-wire. I was honestely surprised that this one didn't came with button-shifter in the console, but a classic shifter instead (picture bellow), also hyundai don't explain the differences..So I'm curious if anybody here know why some models are delivered with classical shifter ( which I have no idea if it's really shift-by-wire ) and others are equiped with button shifter.
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2022Tucson "Blue" Titanium White/ Black
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The shift lever is just a big electronic switch. You can manually shift your transmission by tilting the lever left to right. The pushbutton shifters have the steering wheel paddle shifters to manual change gears, but both are just electronic switches. U.S. doesn't offer the mild hybrid car, only HEV and PHEV. The mild hybrid is a completely different vehicle. It doesn't have a traction motor, only a starter generator that runs on 48 volts, rather than the 200+ volt systems on the PHEV and HEV. The mild hybrid starter generator functions mainly as a start/stop motor and provides a small amount of assistance to the gas motor, usually when moving from a stop. It also works as a generator to recharge the 48 volt system and to maintain the 12 volt system. Your car has a dual clutch transmission, basically an an electronically shifted manual transmission. The HEV's have two motors, the starter generator and a much more powerful electric motor. It has an electronically controlled 6 speed transmission with the larger traction motor mounted between the engine and transmission. It almost always runs to power the car, sometimes by itself, other times to assist the gas engine. As to why some come with buttons and others shift levers, I have no idea.
 

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Discussion Starter · #3 ·
The shift lever is just a big electronic switch. You can manually shift your transmission by tilting the lever left to right. The pushbutton shifters have the steering wheel paddle shifters to manual change gears, but both are just electronic switches. U.S. doesn't offer the mild hybrid car, only HEV and PHEV. The mild hybrid is a completely different vehicle. It doesn't have a traction motor, only a starter generator that runs on 48 volts, rather than the 200+ volt systems on the PHEV and HEV. The mild hybrid starter generator functions mainly as a start/stop motor and provides a small amount of assistance to the gas motor, usually when moving from a stop. It also works as a generator to recharge the 48 volt system and to maintain the 12 volt system. Your car has a dual clutch transmission, basically an an electronically shifted manual transmission. The HEV's have two motors, the starter generator and a much more powerful electric motor. It has an electronically controlled 6 speed transmission with the larger traction motor mounted between the engine and transmission. It almost always runs to power the car, sometimes by itself, other times to assist the gas engine.
Thank you so much for bringing such a detailed clarification. At the end, they are not trying to bug me when saying that this car has a 'shift-by-wire'.. tbh I find the button-shift version much better in terms of how it look like, but at least I got what I paid for. Regarding the mid-hybrid 48V motor..I totally agree, I don't fell that it's make any difference on the engine behavior...maybe the main feature is just the capacity to empower the eletronics on the car by supporting the 12v battery as you said. The Dual clutch is something I need to admit that I'm really loving to drive with..it behaves much seamsly compared to my past experience with automatic with tork converter, I don't even feel the gears engaging...as long it don't bring a headache in the future as some other DCT systems it worth the price...So thank you again, everything is clear now :).
 

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I am glad to help. The 48 volt motor is probably 10 times more powerful than a regular 12 volt starter motor, so the starts are effortless. Additionally, it is belt driven which is much quieter and smoother than a traditional "bendix gear" driven starter motor that gives you that high pitched whine you get when you start a regular gas or diesel engine. Your system turns the gas engine off whenever you are stopped. That is the biggest contributor to your fuel economy. The bigger starter motor makes those start/ stop cycles quicker an almost unnoticeable compared to a regular starter motor.
 

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Discussion Starter · #5 ·
Got it, so it plays an important role for the gas economy in the end. It's my first car with start/stop feature, so I don't have a kind of reference of how good it is...but I don't notice any delay at least or kind of extra effort on the process.
 
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