Hyundai Elantra MD/UD: Cleaning - AGM Battery. Repair procedures - ISG (Idle Stop & Go) System - Fuel System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra MD/UD: 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.

4.
Inspect the battery tray for damage caused by the loss of electrolyte. If acid damage is present, it will be necessary to clean the area with a solution of clean warm water and baking soda. Scrub the area with a stiff brush and wipe off with a cloth moistened with baking soda and water.
5.
Clean the top of the battery with the same solution as described above.
6.
Inspect the battery case and cover for cracks. If cracks are present, the battery must be replaced.
7.
Clean the battery posts with a suitable battery post tool.
8.
Clean the inside surface of the terminal clamps with a suitable battery cleaning tool. Replace damaged or frayed cables and broken terminal clamps.
9.
Install the battery in the vehicle.
10.
Connect the cable terminals to the battery post, making sure tops of the terminals are flush with the tops of the posts.
11.
Tighten the terminal nuts securely.
12.
Coat all connections with light mineral grease after tightening.
When batteries are being charged, an explosive gas forms beneath the cover of each cell. Do not smoke near batteries being charged or which have recently been charged. Do not break live circuit at the terminals of batteries being charged.
A spark will occur when the circuit is broken. Keep open flames away from battery.

Inspection
Battery Diagnostic Flow Vehicle parasitic current inspection 1. Turn all the electric devices OFF, and then turn the ignition switch OFF. ...