Method for controlling at least a part of an exhaust after treatment system of a vehicle

A computer-implemented method, comprising:

• determining, by processing circuitry of a computer system, predicted vehicle operational information including at least predicted travel route for a vehicle, a predicted shutdown of a combustion engine of the vehicle along the predicted travel route, and a predicted subsequent re-start of the combustion engine;
• determining, by the processing circuitry, a topography of the predicted travel route subsequent to the predicted re-start of the combustion engine;
• determining, by the processing circuitry, a set ammonia storage level threshold of a selective catalytic reduction, SCR, catalyst arranged in an exhaust after treatment system to the combustion engine in response to the topography of the predicted travel route subsequent to the predicted combustion engine re-start;
• and
• controlling an injector of the exhaust after treatment system to inject a predetermined amount of reductant for providing ammonia to the SCR catalyst and achieving the set ammonia storage level threshold prior to shutdown of the combustion engine.