The printer displays a message saying "Please replace the toner cartridge" but it can still print. Should I replace it immediately?

Should I replace it immediately?

No need to rush to replace it immediately, but be prepared to do so.

Observe print quality: If the printed pages don't have obvious defects (black spots, streaks, uneven colors), you can continue using it for a while longer.

Pay attention to print volume: Toner cartridges have a lifespan; for example, some can print around 17,000 pages. It's normal for them to prompt for replacement when their lifespan is reached.

Consider brand and model: Different brands and models of toner cartridges have different lifespans and warning mechanisms.

When should I replace it?

Significantly degraded print quality: Spots, streaks, gray backgrounds, blurry text, etc., appear, affecting usability.

Printer completely stops working: Some models will forcibly stop printing after the toner cartridge's lifespan is exhausted.

To avoid trouble: Keep a new toner cartridge on hand and replace it promptly when print quality noticeably declines to avoid failure at crucial moments.

Simply put: The toner cartridge is almost depleted, but it can still "hold on" a little longer. However, as its "strength" decreases, its performance will deteriorate. Replacing it with a new one as soon as possible (new cartridges have full "strength") will ensure print quality and efficiency.

Recommendation: Buy a new toner cartridge of the same model in advance and use it as long as it prints now. Replace it immediately if the print quality is affected.