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Hyundai Equus: For best battery service

The battery is in the trunk.
CAUTION
Make sure that the clear tube vent hose is connected between the nipple at the back side of the battery and the vehicle body vent nipple. This ensures that if battery vapors occur that they will exit the vehicle not remain in the trunk.
WARNING - Battery dangers

Always read the following instructions carefully when handling a battery.

Keep lighted cigarettes and all other flames or sparks away from the battery.

Hydrogen, a highly combustible gas, is always present in battery cells and may explode if ignited.

Keep batteries out of the reach of children because batteries contain highly corrosive SULFURIC ACID. Do not allow battery acid to contact your skin, eyes, clothing or paint finish.

If any electrolyte gets into your eyes, flush your eyes with clean water for at least 15 minutes and get immediate medical attention. If electrolyte gets on your skin, thoroughly wash the contacted area. If you feel a pain or a burning sensation, get medical attention immediately.

Wear eye protection when charging or working near a battery. Always provide ventilation when working in an enclosed space.

An inappropriately disposed battery can be harmful to the environment and human health. Dispose the battery according to your local law(s) or regulation.
CALIFORNIA PROPOSITION 65 WARNING
Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer, birth defects and reproductive harm. Batteries also contain other chemicals known to the State of California to cause cancer. Wash hands after handling.
CAUTION
WARNING
Removing the battery from the vehicle should be done at an authorized EQUUS dealer.
Battery
Battery recharging by battery chargerComponents and Components Location
Components
1. Cowl side trim2. Front door scuff trim3. Center pillar lower trim4. Rear door scuff trim5. Rear pillar trim6. Rear wheel house trim7. Rear package tray trim 8. Front pillar trim
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Relay Box (Engine Compartment) Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Pull out the relay from the engine compartment relay box.
Power Relay (Type A)
-
Do not use pliers.
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Heated Oxygen Sensor (HO2S) Description and Operation
Description
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina
and is installed both upstream and downstream of the Manifold Catalytic
Converter. The sensor output voltage varies in ...