* From the inside: The simplest method, if accessible, is to reach behind the interior panel on the door. There will be a mechanism that controls the latch. You might be able to manipulate this with your hands or a long, thin tool to release the door. This will require some exploring and may involve removing parts of the interior trim.
* Through the window (if possible): If the window is openable, you might be able to reach in and unlock the door from the interior mechanism as described above.
* Emergency release (if equipped): Some Ford Transits have an internal emergency release mechanism hidden somewhere inside the van's cabin related to the rear doors. Check your owner's manual for its location. This is not a standard feature on all models.
* External access (difficult): Getting to the locking mechanism from the outside is extremely difficult and not recommended unless you're experienced with automotive locks and repair. It usually involves significant dismantling of the door panel and possibly causing further damage.
Important Considerations:
* Safety: Before attempting any repair, ensure the vehicle is parked securely and stable on a level surface. Avoid any actions that could put your hands or body in danger.
* Damage: Any attempt to force the door open could cause further damage to the door, locking mechanism, or interior trim.
* Professional Assistance: If you're not comfortable with car repair or if the above methods fail, call a locksmith specializing in automotive locks or a mobile mechanic. They have the tools and expertise to open the door without causing further damage.
In short, gaining access will require some investigation and potentially some disassembly. A picture of the specific door handle failure might help in providing more specific instructions. Always prioritize safety and consider professional help if uncertain.