225ELECTRONICCONTROL UNITSWhen the car is being used nor-mally, special measures are not nec-essary.The following instructions must befollowed very carefully, however, ifyou work on the electrical system orin cases where emergency starting isnecessary:– Never disconnect the battery fromthe electrical system while the engineis running.– Disconnect the battery from theelectrical system if you are rechargingit. The modern battery chargers candischarge voltage up to 20V.– Never perform emergency start–ups with a battery charger. Alwaysuse an auxiliary battery.– Be particularly careful when con-necting the battery to the electricalsystem. Make sure that the polarity iscorrect and that the connection is ef-ficient.Brightwhite colourDark colourwithoutgreen central areaDark colour withgreencentral areaTop upelectrolyteLow batterychargeElectrolyte leveland charge sufficientContact a Lancia DealershipCharge the battery (advisable tocontact a Lancia Dealership)No action neededChecking the battery chargeThe quality of the battery chargecan be checked through the indicator.Depending on the colour of the indi-cator, proceed as described in thetable below or on the label on the bat-tery.