4L
Key reference: 4F0 837 220 R
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Diagnostic port location (OBD)
Illustrative — for orientation only.
Right-hand-drive UK cars: driver's side (right) footwell, on the lower dash panel just above the pedals, close to the bonnet-release lever, with the 16-pin socket facing downwards. There is no hinged door or flap over it — you reach up under the lower dash trim to find it. Same position across all Q7 4L trims (SE, S line, S line Plus).
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