I realized that when pulled hard, seat belts in front wont lock as usually happens on other cars. Is that normal for Jeep? Or will they normally act this way and they will work under negative acceleration.

 

nobody is fastening them these days i guess

 

They're supposed to catch. Yours can be replaced or repaired. There's a thread on here about it where someone had the same issue, and received a reply of how to fix it.

 

i cant find that topic can you help?

 

ok i checked for more info and tried them once more. they are working. if car is made in US specs, it is normal attitude. it wont lock when you pull them. they require car has negative acceleration to move internal pendulum mechanism forward inside. i tried this on road under heavy breaking.they got locked. on european versions they immediately locks when they are pulled hard. FYI.