my brita longlast+ pitcher indicator light isn't blinking at all anymore, is it broken?

Diagnosis

The Brita Longlast+ indicator light operates on a timed countdown mechanism rather than a sensor that detects water purity or filter saturation. When the light stops blinking or fails to illuminate entirely, it typically indicates one of two things: the internal battery has reached the end of its lifecycle, or the electronic reset trigger has become desynchronized from the filter's actual usage cycle. Unlike standard filters, the Longlast+ is designed for a 6-month lifespan, meaning the circuit board is programmed for a much longer discharge window. If the light was previously blinking red to signal a change and has now gone dark, the capacitor may have drained completely, or the internal contact point has oxidized. To confirm if the unit is truly "broken" or simply needs a hard reset, you should attempt a manual override. If the light does not respond to the reset button sequence, the electronic module has likely failed, though this does not affect the actual filtration capabilities of the carbon and ion-exchange resin inside the filter cartridge itself.

How to Fix It

To restore the indicator light and synchronize the timer with a new Longlast+ filter, follow this precise sequence to trigger the electronic reset:

1. Empty the pitcher of all water and remove the filter cartridge from the reservoir.
2. Locate the "Status" or "Reset" button on the lid. On most Longlast+ models, this is a small, circular button integrated into the electronic display housing.
3. Press and hold the reset button firmly for a full 7 to 10 seconds. Do not release the button early; you must hold it until the light flashes or changes color.
4. While still holding the button, ensure the pitcher is sitting on a flat surface to avoid any tilt-sensor interference.
5. Release the button. The indicator should now flash green or blue, signaling that the 6-month countdown has restarted.
6. Reinsert the filter cartridge and fill the reservoir with cold tap water.
7. Allow the water to cycle through the filter completely before drinking to ensure the electronic sensor registers the first full filtration cycle.

If That Didn't Work

• Perform a Power Cycle: Remove the electronic lid entirely from the pitcher. Use a dry microfiber cloth to wipe the contact points on the underside of the lid and the top rim of the pitcher. Debris or mineral buildup (calcium) can create an insulating layer that prevents the battery from powering the LED. Reattach the lid firmly and attempt the reset sequence again.
• Check for Battery Depletion: The Longlast+ electronics are sealed and not designed for user-serviceable battery replacement. If the light remains dark after a 10-second hold, the internal coin-cell battery has likely expired. In this case, the pitcher is still functional as a water filter, but you must switch to a manual calendar reminder (e.g., a smartphone alert) every 6 months.
• Inspect for Water Intrusion: If water has leaked into the lid assembly during washing, it can short-circuit the LED. Leave the lid in a warm, dry area for 48 hours to allow any internal moisture to evaporate. Once completely dry, try the reset button once more.
• Test with a Different Filter: Occasionally, a improperly seated filter can prevent the lid from closing flush, which may interrupt the circuit in certain model variations. Ensure the filter is pushed down until it clicks firmly into the base.

Heads Up

• Avoid Dishwashers: Never put the electronic lid of the Longlast+ pitcher in the dishwasher. The high heat and pressurized water will destroy the electronic timer and void the warranty. Hand wash with a damp cloth only.
• Manual Tracking: Because the light is a timer and not a sensor, it does not know if you are filtering 1 gallon or 100 gallons a day. If you have a large household, change the filter every 4 months regardless of what the light says.
• Filter Priming: Always rinse a new Longlast+ filter under cold running water for 15 seconds before installing it to remove loose carbon fines; this prevents the "grey water" effect in your first few pitchers.
• Storage Tip: If you are going on vacation for more than a week, empty the pitcher and store the filter in the refrigerator to prevent bacterial growth in the stagnant water.