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August 13, 2020 NHTSA CAMPAIGN NUMBER: 20V475000
An engine stall can increase the risk of a crash.
NHTSA Campaign Number: 20V475
Manufacturer Chrysler (FCA US LLC)
Components ENGINE AND ENGINE COOLING
Potential Number of Units Affected 58,016
Summary
Chrysler (FCA US LLC) is recalling certain 2014-2018 Ram 1500 and 2014-2016 Jeep Grand Cherokee vehicles equipped with 3.0L diesel engines. The crankshaft position sensor tone wheel may delaminate causing the engine to lose its ability to synchronize the fuel injector pulses and cam shaft timing, possibly resulting in an engine stall.
Remedy
Dealers should attempt to minimize customer inconvenience by placing the owner in a loaner vehicle if inspection determines that tone wheel replacement is required and the vehicle must be held overnight.
Replace the tone wheel.
Alternate Transportation
Dealers should attempt to minimize customer inconvenience by placing the owner in a loaner vehicle if inspection determines that tone wheel replacement is required and the vehicle must be held overnight.
The magnetic material attached to the tone wheel on about 240 of the above vehicles provides a signal to the crankshaft position sensor. If this signal material is lost, the engine loses its ability to synchronize injector pulses and cam timing. This loss of crankshaft position can result in an engine stall, as well as loss of the ability to restart the engine. A loss of motive power can cause a vehicle crash without prior warning.
Repair
Replace the tone wheel.
Alternate Transportation
Dealers should attempt to minimize customer inconvenience by placing the owner in a loaner vehicle if inspection determines that tone wheel replacement is required and the vehicle must be held overnight.
FCA US will notify owners, and dealers will update the powertrain control module software to maintain vehicle propulsion by reading the camshaft position signal in the event that the crankshaft position signal is lost, free of charge. Owner notification letters were mailed on May 13, 2021. Owners may contact FCA US customer service at 1-800-853-2002. FCA US’s number for this recall is W58.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go towww.nhtsa.gov..
Subject
The magnetic material attached to the tone wheel on about 240 of the above vehicles provides a signal to the crankshaft position sensor. If this signal material is lost, the engine loses its ability to synchronize injector pulses and cam timing. This loss of crankshaft position can result in an engine stall, as well as loss of the ability to restart the engine. A loss of motive power can cause a vehicle crash without prior warning.
Repair
Replace the tone wheel.
Alternate Transportation
Dealers should attempt to minimize customer inconvenience by placing the owner in a loaner vehicle if inspection determines that tone wheel replacement is required and the vehicle must be held overnight.