W211 rear door inner lock issue?

Hi All,

The REAR door RHS (drivers side) cannot be opened from inside the car, i thought at first child lock however w211 do not have child locks...

After searching the net i viewed the same problem raised on other forums on same year W211 (2004) model, same side....stating possible cause inner door handle cable detachment?

Any comments appreciated...

Thanks.
DSB.