CVT means Continuously Variable transmission, since gear ratios can be varied continuously and in infinitely small steps as opposed to conventional gearboxes which have 3/4/5/6 ratios (steps)
Advantages:
Compact
Lighter
Smoother
More fuel efficient
as compared to other GBs. Best suited for light cars, light loads and city driving
Cons:
Needs good cooling
Slow picking
Can not be used for heavy torque applications such towing and racing
Needs service (CVT fluid change)
Expensive to replace
The main issue with nissan CVTs is cooling, something the manufacturer admitted was not adequate. To prolong life, many owners upgraded their CVT coolers, which seemed to stem the issue.
CVT as a heat source exacerbates the already delicate cooling situation.
Used Porsche and Audi race cars in the 80's as PDK
2002 VW introduces DSG to the world with a wet clutch (Clutches immersed in oil) 6AMT in the R32
2008 VW with the 1st dry clutch DSG. compact and lighter for smaller cars
The DSG GB is basically 2 gearboxes in 1.
2 clutch sets (K1, K2)
2 drive shafts (S1, S2)
2 gear sets (GO. GE)
1 clutch kit and drive shaft drives the even number gear set, while the other drives odd number set.
The mechatronics unit controls everything the GB does.
Car warning lights appear on your dash or infontainment system when something is not right with your car. The number and degree of component monitoring differs from car to car, but youll generally have these lights.
If your car throws a light not covered above, you can google your particular model dashboard lights.
In addition to the light meaning, color coding is also important when making decisions regarding a light.
Red light means STOP the vehicle needs immediate technical attention
If you do not have the wherewithal solve it yourself, please seek help. You should not drive a car with a red light on, especially if it is accompanied by a beeping sound.
Yellow and amber: car needs technical attention, but may still drive. the darker the color, the more urgent