W169 2004–2012
We haven't confirmed the location yet.
Mercedes-Benz A-Class OBD port location
Five generations, 1997–2024. Pick yours.
2018–2024
W177
Illustration — use it to know where to look.
Location
Driver's footwell, below the steering column.
Also on this A-Class
- KeysSmart key
- Tools confirmed5
- Transponder chipSubscribers
- Programming procedureSubscribers
2012–2018
W176
Illustration — use it to know where to look.
Location
Driver's footwell, below the steering column.
Also on this A-Class
- KeysSmart key
- Tools confirmed6
- Transponder chipSubscribers
- Programming procedureSubscribers
W168 1997–2004
Driver's footwell, below the steering column. Early models (pre-2000) may have a non-standard 16-pin layout.
Australian and NZ models
W169 2004–2012
RHD (New Zealand and Australian cars): driver's footwell, tucked up into the underside of the lower dash trim above the pedals, immediately alongside the bonnet release lever, behind a small plastic cover. LHD: mirrored to the other side of the column, again high above the pedals — directly above the clutch pedal on a manual car — and again next to the bonnet release. The position is the same on every W169: three-door and five-door, A150 through A200 Turbo, Classic, Elegance and Avantgarde, and it does not move at the 2008 facelift. Do not confuse it with the lift-out floor hatch in the same footwell that covers the battery and the main fuse box — that is a separate panel under the mat with a coin-turn plastic screw, and it sits on the driver's side on a right-hand-drive car and the passenger side on a left-hand-drive one.
Questions
Mercedes-Benz A-Class OBD questions
W177 (2018–2024): Driver's footwell, below the steering column. W176 (2012–2018): Driver's footwell, below the steering column. W168 (1997–2004): Driver's footwell, below the steering column.
Other Mercedes-Benzs
Found the port. Now program the key.
Step-by-step add-key and all-keys-lost procedures for every A-Class, which of your tools will do it, and what catches people out.
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