| Sign | Cause |
| Transmission makes noise in neutral | Oil level too low or wrong grade of oil Input shaft or bearings are worn out Incorrect input shaft lateral play Clutch Damage - see Section 5 |
| The transmission makes noise only when driving (in all gears) | Oil level too low or wrong grade of oil Input shaft or bearings are worn out Incorrect input shaft lateral play The output shaft or bearings are worn out Incorrect output shaft bearing preload The differential or bearings are worn out Incorrect differential bearing preload Worn or chipped teeth on output shaft/crown gear |
| The transmission makes noise only when driving (only in one gear) | Gear teeth are worn or chipped The gear bushing or bearing is worn out |
| The transmission jumps out of gear | The picker mechanism is worn out or damaged Weak, worn or damaged parts of the picker mechanism retainer (especially the springs) Worn selector rod or offset fork shaft/rod retainer grooves Shift forks are worn or damaged Synchronizers are worn or damaged Incorrect preload/shaft side play |
| Noise when changing gears | The synchronizers are worn out (especially blocking rings and cones) Wrong grade of oil Clutch Damage - see Section 5 |
| The gears are difficult to engage | Clutch Damage - see Section 5 The gearshift rack is worn or damaged, or the return spring is broken The picker mechanism is worn out or damaged Synchronizers are worn or damaged |
Note: This chapter does not provide comprehensive troubleshooting information, but describes more common damage that may be encountered during the life of the vehicle. Consult your dealer for more specific advice.