1. Low Transmission Fluid: Check the transmission fluid level and ensure correct quantity and condition.
2. Faulty Shift Linkage: Check for any loose, damaged, or disconnected components in the shift linkage.
3. Clutch Issues: If equipped with a manual transmission, inspect the clutch master cylinder, slave cylinder, and clutch disc/pressure plate for wear or damage.
4. Faulty Gear Shifter Mechanism: Check for any damaged or worn components within the gear shifter assembly.
5. Transmission Control Module (TCM) Issues: Depending on the model, a malfunctioning TCM may affect gear engagement.
6. Synchronizer Issues: Worn or damaged synchronizers can prevent smooth gear engagement.
7. Internal Transmission Damage: Failure of internal transmission components such as gears, bearings, or shafts.
Note: Accurate diagnostics require proper inspection, testing, and potentially specialist tools. If you lack expertise, it's advisable to have the vehicle inspected by a qualified mechanic.
