When to Use D+ and D- in Automatic Transmission?

[StJoshua]

Here is a detailed introduction on when to use D+ and D- in automatic transmission: 1. When going uphill or downhill: When frequently climbing long or steep slopes, if the automatic transmission's computer controls the gear shifting, there may be instances of gear dragging. This manifests as high gear with low speed, causing the engine to lack power and vibrate intensely, increasing the chance of incorrect air-fuel ratio. Incomplete combustion of the fuel mixture can easily produce a large amount of carbon deposits and increase fuel consumption. Using manual mode in such situations can effectively reduce these occurrences. When going downhill, avoid coasting in neutral and instead use engine braking to reduce the burden on the braking system. In this case, manual mode can be used to lower the gear by one or two levels to assist with braking, rather than relying on the computer to control the gear based on speed. 2. When overtaking or starting: Manual mode (D+ and D-) can be used when overtaking to manually downshift for greater power. This also applies when starting, especially in racing or at traffic lights.