A heads up!
I recently bought a Mercedes A Class vehicle. It's Vehicle Identification Number tells me it was built in Finland on Sep 25 2018.
Fitted "as standard" to the A Class is a Speed Assist Programme. It's advertised function is to provide me with information that enables me to avoid exceeding the speed limit.
It gathers the information from a forward facing camera recording speed limit signs. It does not get information from the sat/nav.
All as per the 494 page manual.
The manual tells me that the system does not absolve me from any responsibility regarding the vehicle speed.
The manual does not tell me that the system ceases to provide any information if the vehicle makes a right or left turn at a road junction be it a T-junction or crossroad or roundabout. Information is not restored until the camera sees another road sign. The system cannot provide information in built up areas.
The manual does not tell me that the camera may not see a road sign unless the camera is square on to the sign.
The manual does not tell me that the system again ceases to provide any information 10 seconds after passing the sign of a black diagonal stripe on a white background denoting the National Speed Limit.
The manual does not tell me that the camera will operate in another mode such that the driver receives incorrect information. This includes telling me that a local dual carriageway has different speed limits (depending on the direction of travel) or that the speed limit is 30-mph (incorrect), or the speed limit through Chatsworth Country Park is 70mph (!) etc.
BUT,
I have emails from Mercedes Benz and a main dealer that this situation is normal. The emails go to great lengths to stress that the system is not failing. It is working exactly as designed. It is not an unusual scenario with the A Class
Like all "Assist" packages, they are there only for guidance. Mercedes Benz are in no way responsible for any result of a perceived malfunction in a system.
Look out for the door mirror mounted ash-tray and perfumed airbags!
The mind boggles as to the disclaimers for the much advertised forthcoming "Assist" packages that will make the roads safer that are being banded about. Packages that will make speeding offences impossible and rear end shunts a thing of the past.
No more accidents in the rain or fog.
And we have yet to see their progress on driverless cars!
Caveat emptor.
Regards
Keith
PS If anyone wishes to share similar experiences, please email me. This might be worth taking up with Trading Standards, HSE and Avertising Standards Agency