Some ECUs having internal fault code which cause same problems for our cars. Having intermittent engine start problems also engine light one which not possible to identify with genuine diagnostic equipment. 

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Changing ECU is always very painful. New one cost in thousands and also required programming afterwards.
The solution is buy the second hand one and transfer data from the old one if possible. This is nothing new
and been practised for years. In most causes required ECU to be opend.

We can offer this service using OBD only which means no need open ECU anymore.
If you have a trouble with Engine Control Module all we need is hardware with the same part number and we can do the rest via OBD in 1h time 

IF old ECU not readable anymore or destroyed that not very big problem. We can make new one using traditional method as well.

Please note after ECU replacement car requires coding and programming which we provide too. 

This service for BMW and Mercedes most available module with two years warranty.