Make sure the battery is fully charged.
Make sure that the deflection and tension of the alternator belt correspond to the nominal values.
Turn the ignition switch to position «ON» and check that the battery charge indicator lights up. If this does not happen, check the circuit between the battery, the battery charge indicator and the terminals of the electronic control unit.
Start the engine and check that the indicator is off. If not, check engine trouble codes (P0112, P0113, P2502, P2503, P2504).