iFixit - Answers With Device "Keurig K40"

Keurig K40: leaking water out bottom of coffee maker

Thu, 29 Jan 2026 20:22:21 -0700

my keurig k40 is leaking water from the bottom

⟐ Commented January 29, 2026 at 20:22 MST

Keurig K40: Why wont my keurig make a full cup of coffee?

Thu, 29 Jan 2026 20:18:22 -0700

hi … i have a keurig k40 …that every couple months decides to not make a full cup of coffee … tried everything shown in info i seen on this site…last couple times i had this problem …on the top theres a check valve that i took apart ..cleaned etc and watever i actually really did im not sure ..but works than for a month or 2 same issue …would it help changing check valve ? or would this k40 have a solenoid that could be causing issue ?

⟐ Commented January 29, 2026 at 20:18 MST

Keurig K40: hot water is pouring back into the tank

Thu, 29 Jan 2026 20:13:11 -0700

Hot water pours back into the tank what can I do to fix it

⟐ Answer edited January 29, 2026 at 20:13 MST

Keurig K40: Keurig “lights of death blinking.” Pump stopped working.

Mon, 12 Jan 2026 09:01:57 -0700

After doing research, I’ve come to the conclusion the pump may be shot; but just looking for confirmation. Turned it on this morning, pump went to pull water, acted slower than normal. Did the whole “put out half cup for a cup” thing. Tried one more time and the pump finally stopped. Now it won’t do anything when turned on. I left it for a minute or two, then the “Add Water, Heating, and Medium Cup” lights came on…I’ve checked the filters, check valve, needles, etc. Everything seems to flow the way it should. Saw a “method” that said to press and hold the Med cup button while everything is blinking and then the system would purge itself (or at least that’s what it sounds like it does), but all that happens when I do that is kill those lights and turn the power light back on (it’s off while the others are blinking). Is there anything else that can be done?

⟐ Commented January 12, 2026 at 9:01 MST

Keurig K40: Why are all of the lights blinking on the Keurig?

Sat, 20 Dec 2025 08:28:38 -0700

When I turn the Keurig on, all of the indication lights are on and blinking. The Keurig will not produce any coffee when these lights are on.

⟐ Commented December 20, 2025 at 8:28 MST

Keurig K40: Drip tray on model 40

Sun, 22 Jun 2025 17:35:36 -0700

How do I clean the drip tray

Keurig K40: add water stays on

Sat, 28 Dec 2024 09:23:12 -0700

No matter what i do the add water light stays on

⟐ Commented December 28, 2024 at 9:23 MST

Keurig K40: Why is there a loud rapid rattle sound when brewing a cup?

Tue, 05 Nov 2024 16:40:26 -0700

When the cup size choice is selected there is a loud loose rapid rattling noise and no coffee. Power off and back on normal operation is restored.

Keurig K40: Black plastic piece on keurig Pic attached

Sun, 08 Sep 2024 11:27:36 -0700

Can this piece be reattached or is it broken?

Keurig K40: Black plastic piece on keurig

Sun, 08 Sep 2024 11:25:22 -0700

The black prastic piece came off from underneath where the pods go, it's cosmetic but can it be replaced or snapped back on?

Keurig K40: K duo essential. All 5 lights in solid

Sat, 06 Jul 2024 09:24:55 -0700

All 5 lights are on solid on my K Duo Esstential and unit will not do anything. Please help

⟐ Answered July 06, 2024 at 9:24 MST

Keurig K40: O ring in reservoir floating in water

Sun, 19 May 2024 12:36:57 -0700

Can O ring in reservoir be replaced

Keurig K40: Incorrect identification for part

Sat, 01 Apr 2023 00:29:01 -0700

That is not a water pump- it is a check valve!

⟐ Answered April 01, 2023 at 0:29 MST

Keurig K40: How do you remove all the water before packing away?

Thu, 06 Oct 2022 12:28:01 -0700

How to remove any water left inside machine before storing

⟐ Answered October 06, 2022 at 12:28 MST

Keurig K40: Keurig power light and heating light the three cup sizes are

Tue, 07 Jun 2022 18:48:56 -0700

The heating light is on, but the three cups are not lit up and it will not brew. It is not making the brewing noise at all

Keurig K40: Dispenses less water than used to into drink

Mon, 17 May 2021 20:34:01 -0700

Get the amount of expresso when pressing button for largest cup

⟐ Answer edited May 17, 2021 at 20:34 MST

Keurig K40: How to drain internal tank

Tue, 15 Dec 2020 07:22:57 -0700

I cannot reassemble the hose cover. It will not shut completely.

Keurig K40: Random water output - Water left in Pod

Fri, 04 Sep 2020 10:53:41 -0700

My Keurig K40 is acting strange.

The water output varies widely!

I can press Large and get an espresso sized shot in the cup.

I can press Small and get an overflowing mug!

Press Medium and maybe get less than small.

And all this is without a Pod installed.

With a pod installed, a lot of liquid will remain in the pod…and same results as above.

I have cleaned all the needles, checked all tubing, valves and filters.

Could the computer logic be faulty?

⟐ Commented September 04, 2020 at 10:53 MST

Keurig K40: Won't heat water, said to add water. Water container is full

Sun, 24 May 2020 13:07:15 -0700

Will not heat water, said add water, water container is full

⟐ Answer edited May 24, 2020 at 13:07 MST

Keurig K40: Lights flash but won't brew

Sat, 04 Apr 2020 11:20:44 -0700

Add water, heating, and medium cup LEDs flash