my Volvo XC90 won't start and I hear clicking, what should I do?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Tools Required: Battery terminal cleaner, multimeter, socket set, wrench set.

2. Inspect and Clean Battery Terminals

• Remove the battery terminals (negative first, then positive) using a wrench.
• Clean any corrosion from the terminals and battery posts using a battery terminal cleaner.
• Reconnect the terminals securely (positive first, then negative).

3. Replace the Battery (if necessary)

• If the battery voltage was below 12.4 volts, replace it.
• Remove the old battery by unbolting it from its tray and lifting it out.
• Place the new battery in the tray, securing it with bolts.
• Connect the positive terminal first, followed by the negative terminal.

4. Test the Starter Motor

• If the battery is in good condition, test the starter motor.
• Disconnect the starter motor wiring and apply direct battery voltage using jumper cables.
• If the starter engages, it may need replacement.
• If it does not engage, further diagnosis of the starter circuit is required.

5. Check Fuses and Relays

• Locate the fuse box and inspect all fuses related to the starting system.
• Replace any blown fuses with ones of the same amperage.
• Inspect and replace the starter relay if faulty.