الصورة هذه للتوضيح:

سيارتي فورد كراون فكتوريا 1997
انا اتكلم عن : P RND21
سؤالي الاول: هو ما خصائص 2 و 1 في قير التعشيق ارجو ان يكون الشرح واضح ومفهوم ومفصل اذا أمكن رجاء
سؤالي الثاني: هو يوجد في أعلى قير التعشيق زر اذا تم الضغط عليه يطلع في الطبلون علامة باللون الاخضر مكتوب O/D مافائدة هذا الزر وما خصائصه علما انا عندي كتالوج السيارة والكتالوج باللغة الانجليزي قرأته ولم افهم شيء وهذا هو ما هو مكتوب في الكتالوج:
Overdrive Off Indicator
This light tells you that the Transmission Control Switch (TCS) has been pushed. When the light is on, the transmission will not shift into overdrive. Depressing the button will return the vehicle to "overdrive on" mode. The transmission will be in the "overdrive on" mode when the vehicle is started even if the O/D OFF mode was selected when the vehicle was last shut off.
NOTE: If the light doe not come on when the TCS is depressed or if the light flashes when you are driving, have your veHicle serviced at the first opportunity. If this condition persists, damage could occur to the transmission.
ووجدت عنوان في الكتالوج ايضا يتكلم عن O/D OFF تحت عنوان Driving وهذا هو النص:
Driving
Your vehicle's gearshift is on the steering column. The Transmission Control Switch (TCS) is located on the end of the gearshift lever. The Transmission Control[SIZE=5] Indicator Light (O/D OFF) [/SIZE]is located on the instrument panel. You can put the gearshift lever in any of the several positions.
The O/D OFF light is off (not illuminated) during normal vehicle operation. This allows the transmission to upshift and downshift from 1st through 4th gears. When the TCS is pressed, the TransmissionControl[SIZE=5] Indicator Light will illuminate (O/D OFF) on the instrument panel. When this O/D OFF is [/SIZE]illuminated the transmission will upshift and downshift from 1stthrough 3rd gears.
If the O/D OFF light doe not come on when the TCS is depressed or if the light flashes when you are driving, have your vehicle serviced at the first opportunity. If this condition persists, damage could occur to the transmission.
[SIZE=5]To [/SIZE]return the transmission to normal operation[SIZE=5] ([/SIZE]1st through 4th gears[SIZE=5]) depress the TCS again. This switch may be used to cancel [/SIZE]overdrive[SIZE=5] any time the [/SIZE]vehicle is being driven. Each time your vehicle is started, theoverdrive system will automatically be in the normal overdrive mode and the light will not be illuminated.
وكذلك وجدت عنوان يتكلم عن 2 وعنوان يتكلم عن 1 وهذا هو النص:
When to use 2 (second)
use 2 (second) for start-up on slippery roads or to give you more engine braking to slow your vehicle on downgrades.
When to use 1 (low)
use 1 (low) when driving down steep grades. It gives more engine braking to slow your vehicle than 2 (second) on the downgrades. you can upshift from 1 (Low) to 2 (second) or from 1 (low) to Overdrive at any speed.
ترجمتها ولكن الترجمة لم تكن واضحه
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