Jeep Cherokee: Active Drive power transfer unit (PTU) spline wear and rear drive module failure (KL AWD)

All-wheel-drive KL Cherokees send drive to the rear through a power transfer unit (PTU) bolted to the gearbox and a rear drive module (RDM) on the back axle. On many cars the PTU input or differential splines wear, which can cut drive while moving or stop the car holding in Park, and the PTU shift motor can fail when gear oil seeps into it. FCA ran several recalls for this: US 20V-343 (W47) and 23V-302 (45A) for 2014-2017 cars and 26V-290 (40D) for 2019-2023 cars, with Australian equivalents covering 2,609 MY2014-2017 cars and REC-005697 for 2015-2023 cars; the remedy is mostly a driveline software update, with the PTU replaced only if it has logged damage. Rear drive modules also give whine, drone and clunk complaints, and early 2-speed RDMs are not interchangeable with later ones without a new driveline module, so a used-car repair is not cheap.

• "Service 4WD" or "Service AWD" message on the dash
• Whine, growl or drone from under the car that changes with speed
• Clunk or pop from the rear when turning or taking off
• Car rolls slightly or will not hold when put in Park
• Sudden loss of drive while moving

Switch on and check the dash for a "Service 4WD" or "Service AWD" message, and on Trailhawk or Active Drive Lock cars cycle the terrain selector and 4 Low button to see that the modes change without a warning. On the test drive listen with the radio off for a whine or drone that rises with road speed, and do slow full-lock turns in a car park listening for clunks or a pop from the rear. On a gentle slope, select Park, release the brake and make sure the car holds firmly. Use a phone torch to look behind the front of the gearbox and at the rear diff for wet gear oil. Ask for proof that the PTU recall work (W47, 45A or 40D, or the Australian equivalents) has been done. If a workshop inspection is possible: have the driveline module scanned for PTU and RDM codes such as C1494, check the PTU and RDM oil levels and condition, and ask a Jeep dealer to run the VIN for open recalls.

Parts involved: Transfer case.

$400 to $9,000 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “Has the PTU recall been done, and do you have the paperwork?”
• “Has the car ever shown a Service 4WD message?”
• “Has the PTU or rear diff ever been replaced or had its oil changed?”
• “Has it ever lost drive or rolled while in Park?”

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

• NHTSA recalls 20V-343 (FCA W47) and 23V-302 (FCA 45A), 2014-2017 Jeep Cherokee PTU input spline wear (TFLcar, 93,000 Cherokees report)
• NHTSA recall 26V-290 (FCA 40D), 2019-2023 Jeep Cherokee PTU internal failure (TFLcar, May 2026)
• Australian vehicle recall REC-005697, Stellantis Australia and New Zealand, Jeep KL Cherokee 2015-2023 PTU differential gear splines
• FCA TSB 03-002-15, 2014-2015 KL Cherokee drone noise with rear drive module engaged
• Samarins 2014-2022 Jeep Cherokee common problems (PTU recalls W47 and W48)