A no crank or no start condition may develop due to electronic lockup of the wireless control module (WCM), also referred to as the Sentry Key Remote Entry Module (SKREEM). When this module fails the remote keyless entry system will also not operate. The WCM is commonly replaced to correct this concern.Google+
Car Problem Reports
Jeep Liberty Engine Will not Start Due to Wireless Control Module Fault
Jeep Liberty Problem
Average Mileage: 58,200 mi (13,000 mi - 190,000 mi)
Visitor, 2012 Jeep Liberty, 22,000 mi
Car will not start intermittenly, no crank noise. Dealer says they can't repeat the problem, and the computer does not show anything. I am not happy, bought a new car because I needed a dependable car.
Sometimes when I try to start the car I put the key in and turn and nothing, try again and nothing. Try again and it starts. Doesn't happen all the time. Same thing happened at 30,000 miles and they replaced the skeem module for free. Had the car in the shop and it did it again when the service manager was present. Left the care for 2 days and they couldn't repeat the problem. Computer checked out as nothing wrong. Took it home started for 2 days fine, 3rd day same thing happened again. I think it's the skeem module again they think not. I'm confused.
Visitor, 2012 Jeep Liberty, 18,000 mi
Has no crank condition. Been to dealer 3 times & the problem continues.
Visitor, 2012 Jeep Liberty, 13,000 mi
Recommend Replace WCMF
Visitor, 2012 Jeep Liberty, 38,000 mi
car will not start intermittently. Been to dealer three times - no codes - nothing they can do unless it happens to them. Gave them video showing what it does - still nothing. Very frustrated.
Visitor, 2011 Jeep Liberty, 59,000 mi
I have the same problem with my 2011 Patriot. Usually on a short (5) min trip to the store or something when I get back in the car it will not start. Then over the next few days it will happen again often randomly but will stop for about another month until it starts doing it again for a few days. I took it to the dealership and they said it didn't produce any errors and since they couldn't get it to replicate they couldn't do anything for it.
Also talked to Jeep customer service and they said the same thing. Absolutely no help at all! They even suggested next time it happens to call a tow truck where they would turn the key and put it in neutral and have it work for them I am sure.
How does this get diagnosed? What test do they need to run because I am sick of it!