Hyundai GENESIS COUPE BK 2010 Manual page 206

For an accurate measurement of a vehicle parasitic current, all electriacl systems should go to sleep mode. (It
takes at least one hour or at most one day.) However, an approximate vehicle parasitic current can be
measured after 10~20 minutes.
4. Connect an ammeter in series between the battery (-) terminal and the ground cable, and then disconnect the
clamp from the battery (-) terminal slowly.
Be careful that the lead wires of an ammeter do not come off from the battery (-) terminal and the ground cable
to prevent the battery from being reset. In case the battery is reset, connect the battery cable again, and then
start the engine or turn the ignition switch ON for more than 10 sec. Repeat the procedure from No. 1.
To prevent the battery from being reset during the inspection,
1) Connect a jump cable between the battery (-) terminal and the ground cable.
2) Disconnect the ground cable from the battery (-) terminal.
3) Connect an ammeter between the battery (-) terminal and the ground cable.
4) After disconnecting the jump cable, read the current value of the ammeter.
5. Read the current value of the ammeter.
A. If the parasitic current is over the limit value, search for abnormal circuit by removing a fuse one by one and
checking the parasitic current.
B. Check the parasitic current again, and search for suspected unit by removing a unit connected with the abnormal
circuit one by one.
Limit value (after 10~20 min.) : Below 50mA
Cleaning
1. Make sure the ignition switch and all accessories are in the OFF position.
2. Disconnect the battery cables (negative first).
3. Remove the battery from the vehicle.
Care should be taken in the event the battery case is cracked or leaking, to protect your skin from the
electrolyte.
Heavy rubber gloves (not the household type) should be wore when removing the battery.