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Home >> Acura >> 2003 >> MDX Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> System Description >> General Operation >> Gear Selection

Gear Selection

The shift lever has eight positions; P: PARK, R: REVERSE, N: NEUTRAL, D5: 1st through 5th gear ranges, D4: 1st through 4th gear ranges, D3: 1st through 3rd gear ranges, 2: 2nd gear, and 1: 1st gear.

GEAR SELECTION POSITION DESCRIPTION

Position Description
P: PARK Front wheels locked; park pawl engaged with park gear on countershaft. All clutches are released.
R: REVERSE Reverse; reverse selector engaged with countershaft reverse gear and 5th clutch locked.
N: NEUTRAL All clutches are released.
D5: DRIVE (1st through 5th) General driving; starts off in 1st, shifts automatically to 2nd, 3rd, 4th, then 5th, depending on vehicle speed and throttle position. Downshifts through 4th, 3rd, 2nd, and 1st on deceleration to stop. The lock up mechanism operates in 2nd, 3rd, 4th, and 5th gear.
D4: DRIVE (1st through 4th) General driving; starts off in 1st, shifts automatically to 2nd, 3rd, then 4th, depending on vehicle speed and throttle position. Downshifts through 3rd, 2nd, and 1st on deceleration to stop. The lock up mechanism operates in 2nd, 3rd, and 4th gear.
D3: DRIVE (1st through 3rd) Used for rapid acceleration at highway speeds and general driving; uphill and downhill driving; starts off in 1st, shifts automatically to 2nd, then 3rd, depending on vehicle speed and throttle position.
Downshifts through 2nd to 1st on deceleration to stop. The lock up mechanism operates in 2nd and 3rd gear.
2: SECOND Used for engine braking or better traction starting off on loose or slippery surfaces; stays in 2nd gear; does not shift up or down.
1: FIRST Used for engine braking; stays in 1st gear; does not shift up.

Starting is possible only in the P and N positions because of a slide-type neutral-safety switch.