This the procedure to fix it
They have a TSB on this issue
I have sent you diagrams to help repairing it
Head restraint of front seat jams in lowest position Topic number LI91.16-P-062217 Version 1 Design group 91.16 Head restraints Date 11-11-2015 Validity Only with manual head restraint adjustment, not valid for SA code: 275, 242, 241, 222, 221, P65 Reason for change Complaint: The head restraint of the front seat jams in the lowest position and can no longer be adjusted vertically. Cause: If the head restraints on the front seats can no longer be adjusted vertically, this is usually because they have been knocked downwards with the adjustment button pressed. The head restraint locks in the notch/release lock of the head restraint bar, which then prevents any adjustment. Remedy: Follow the steps below: 1. Fabricate a tool (steel rule 0.5mm thick) to release the head restraint and deburr it (Pic1). 2. Cover the head restraint sleeve with a cloth to prevent damage (Pic2). 3. Insert the fabricated tool into the side of the head restraint guide with the adjustment button from behind (Pic2). 4. The head restraint is released by pressing the tool to the left while simultaneously lifting the head restraint (Pic3).
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