Simple Checks (Do these first):
* Parking Brake: Is your parking brake fully released? This is the most common cause.
* Automatic Transmission:
* Shift Lever: Try gently rocking the shifter back and forth while trying to select a gear. Sometimes it can get stuck.
* Engine Running: Is the engine running? You need the engine running to shift out of Park on most automatics.
* Transmission Fluid: Check your transmission fluid level. Low fluid can cause shifting problems. (Check your owner's manual for location and procedure; the fluid may be hot.)
* Manual Transmission:
* Clutch: (If applicable) Is the clutch fully depressed? If not, you won't be able to shift.
* Gear Selection: Try shifting very slowly and deliberately, make sure you're not forcing it.
More Serious Possibilities (Requires professional help):
* Shift Cable/Linkage: This connects the shifter to the transmission. If it's broken or damaged, the transmission won't receive the signal to shift.
* Transmission Problems: This could range from low fluid (already mentioned) to internal transmission damage requiring a costly repair or replacement.
* Electrical Problems: A problem in the electrical system controlling the transmission (especially in automatics) could prevent shifting.
* Safety Interlock: Some vehicles have safety interlocks that prevent shifting out of park if certain conditions aren't met (e.g., seatbelt not fastened, door ajar). Check your owner's manual for details.
What to do:
1. Safety First: If your car is in a dangerous location, get it towed.
2. Basic Checks: Perform the simple checks listed above.
3. Professional Help: If the simple checks don't solve the problem, take your car to a qualified mechanic or transmission specialist. Describing the symptoms accurately will help them diagnose the issue. Don't attempt major repairs yourself unless you have significant mechanical experience.
Trying to force the shifter could cause further damage. It's always best to get professional help when you're unsure about the cause of a car problem.
