To refill the rear washer fluid:
1. Locate the washer fluid reservoir: This is usually a plastic tank, often translucent, located under the hood. It's usually marked with a washer fluid symbol.
2. Open the reservoir cap: Carefully unscrew the cap.
3. Add washer fluid: Use a funnel to pour washer fluid into the reservoir. Don't overfill – check the reservoir's markings for the maximum fill line. Use a high-quality washer fluid appropriate for the temperature range you expect.
4. Replace the cap: Securely tighten the cap back onto the reservoir.
5. Test the system: Turn on your rear windshield wiper and washer to ensure it's working correctly.
If, after refilling the reservoir, your rear washer still doesn't work, you might have a clogged line, a faulty pump, or another issue requiring a mechanic's attention.