Jeep Issued a recall for this fault under the number 64A. They have since revised this stating that this recall has not resolved the possible fault and having had 64A carried out does not mean the problem is rectified.
Even if you had 64A carried out you still need to get 20D Carried out which is the revised procedure.
“The rear coil spring on about 84,600 of the above
vehicles may not have been correctly installed during
the repair of FCA US recall ID – 64A (NHTSA Recall
ID – 23V413) or has not been repaired under that
recall, which may allow the coil springs to come out of
position. A rear coil spring that detaches from the
vehicle while driving may create a road hazard to
operators and occupants of other vehicles, which can
cause those vehicles to crash without prior warning
and/or may result in injury to other road users”
What are the defects?
Due to a manufacturing defect, incorrectly installed rear coil springs may detach whilst driving. As a result, it could lead to a loss of vehicle control.
What are the hazards?
A loss of vehicle control could increase the risk of an accident causing injury or death to vehicle occupants and/or other road users.

What should consumers do?
Owners of affected vehicles can contact their nearest authorised Jeep Dealer to have the vehicle’s rear coil springs inspected and, if required, replaced free of charge.
Everything you need to know about the Jeep Grand Cherokee WL