Here are some potential causes and what to do:
* Shift linkage: The most common cause is a problem with the linkage that connects the shifter to the transmission. This could be a broken, bent, or disconnected component. A mechanic will need to inspect the linkage visually and potentially replace or adjust parts.
* Transmission problems: Issues within the transmission itself, such as low transmission fluid, internal damage, or a failing shift mechanism, can prevent the shifter from engaging park. This requires a thorough transmission inspection and likely repairs.
* Park pawl: The park pawl is a mechanical component inside the transmission that locks the output shaft when in park. A worn or broken park pawl will prevent the transmission from fully engaging park. This also requires transmission repair.
* Shift cable adjustment: In some cases, the shift cables might simply need adjustment. This is a relatively simple fix, but it's crucial to do it correctly to avoid further problems.
What you should do:
1. Do not drive the vehicle. Park it on a level surface, engage the emergency brake (parking brake) firmly, and chock the wheels (use wheel chocks or bricks) to prevent rolling.
2. Call a qualified mechanic or tow truck. This is not a DIY repair unless you have significant automotive experience, especially regarding transmissions. Incorrect repairs could worsen the problem or damage your transmission further.
3. Describe the problem clearly to the mechanic: Tell them the shifter is loose and won't go into park.
The mechanic will need to diagnose the exact cause of the problem to provide the proper repair. Ignoring this issue is dangerous and could lead to costly repairs or accidents.
