Noisy in Drive

WARNING: This page is about a different variant/trim than selected.

Cause	Correction
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis.
Low gear oil level	Inspect the power transfer unit for leaks, repair as required. Refer to Power Transfer Unit Case Leak Diagnosis , and Adhesives, Fluids, Lubricants, and Sealers .
Incorrect gear oil in the power transfer unit	Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .
Water or contamination within the power transfer unit oil	Flush the contaminated fluid from the unit and replace with new oil.
Worn propeller shaft constant velocity joints	Replace propeller shaft assembly. Refer to Two-Piece Propeller Shaft Replacement .
Worn or noisy wheel bearings	Replace the wheel bearings as required. Refer to Wheel Bearings Diagnosis .
Worn wheel drive shaft constant velocity joints	Replace the constant velocity joints, as required. Refer to Front Wheel Drive Shaft Inner Joint and Boot Replacement , Front Wheel Drive Shaft Outer Joint and Boot Replacement , or Rear Wheel Drive Shaft Inner Joint and Boot Replacement , and Rear Wheel Drive Shaft Outer Joint and Boot Replacement .
Bearing noise within the power transfer unit A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the power transfer unit. A grinding noise that changes as a transmission shift occurs is not within the power transfer unit. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires.	Inspect for the proper power transfer unit fluid level. Fill, as required. Identify the location of the noise using the J-39570 Chassis Ears. If the noise continues, inspect the power transfer unit internal components. If damage is present, replace the assembly as required.
Gear set whine noise within the power transfer unit A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the power transfer unit. A whine noise that changes as a transmission shift occurs is not within the power transfer unit. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires.	Inspect for the proper power transfer unit fluid level. Fill, as required. Identify the location of the noise using the J-39570 Chassis Ears. If the noise continues, inspect the power transfer unit internal components. If damage is present, replace the assembly as required.