Battery Check. Buick Century 1999

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1999 🢒 Century 🢒 Engine 🢒 Engine Electrical 🢒 Battery Check

Caution: Batteries produce explosive gases. Batteries contain corrosive acid. Batteries supply levels of electrical current high enough to cause burns. Therefore, in order to reduce the risk of personal injury while working near a battery, observe the following guidelines:

•	Always shield your eyes.

•	Avoid leaning over the battery whenever possible.

•	Do not expose the battery to open flames or sparks.

•	Do not allow battery acid to contact the eyes or the skin.

-	Flush any contacted areas with water immediately and thoroughly.

-	Get medical help.

Step

Action

Normal Result(s)

Abnormal Result(s)*

Inspect the following areas for battery acid:

•	The battery case

•	The battery tray

•	The area around and underneath the battery tray

Inspect the battery for a cracked, broken, or damaged case.

•	The battery case, the battery tray, and the surrounding area are dry.

•	The battery is not cracked, broken, or damaged.

The battery case, the battery tray, and the surrounding area are wet. The battery is cracked, broken, or damaged. Battery Tray Replacement .

Compare the Cold Cranking Amperage (CCA) and the Reserve Capacity (RC) of the battery or the Original Equipment (OE) specification. Go to Battery Usage .

The ratings of the vehicle battery meet or exceed the CCA and the RC of the original equipment specification.

The ratings of the vehicle battery do not meet the CCA and the RC of the original equipment specification, Battery Tray Replacement .

Inspect the battery hydrometer for a green dot.

The battery hydrometer displays a green dot.

•	If the battery hydrometer has a dark dot (no green dot visible), test the condition of the battery, Battery Not Operating Properly .

•	If the battery hydrometer has a yellow dot, check the battery for low electrolyte, Battery Hydrometer Displays Yellow Dot .

Turn the ignition key to START and check to see if the engine cranks normally and starts.

The engine cranks normally and starts.

•	Engine does not crank or cranks slowly, If the vehicle will not crank or cranks slowly, Battery Not Operating Properly .

•	Engine cranks normally but does not start, Engine Cranks but Does Not Run (RPO 3.1L) or Engine Cranks but Does Not Run (RPO 3.8L) in Engine Controls.

•	Engine starts but does not start overnight or after a couple of days, refer to Charging System Check and Battery Electrical Drain/Parasitic Load Test .

Inspect the battery for proper installation and retention in the battery tray.
Inspect the battery terminals for clean and tight connections.

•	The battery is firmly held in place in the tray and the hold-down bolt is properly tightened.

•	The battery terminals are clean and tight.

•	Install the battery in the battery tray correctly. Battery Replacement .

•	Battery Terminal Check .

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.