Hi.
If there is no bake or broil most likely the thermal fuse is blown
Part number: 3196548 
It's not very clear where is it (the diagram is not the best) but I think you should look under the top, behind the door latch. the video clip take you to the back of the range...you may check it too.
Here are the breakdown diagrams and
Chassis parts for Whirlpool WFE381LVS1 - AppliancePartsPros.com
It's #26.
Simon.
Good luck. Post the results.