Bosch Tassimo Red Light (How To Reset It!)

Has your beloved Bosch Tassimo coffee machine been flashing that persistent red light at you, refusing to function as it should? Don’t worry! I’ve got your back.

Whether it’s due to a descaling issue, a rogue cleaning disk, or a rebellious water tank, this step-by-step guide will help you troubleshoot, resolve, and reset, bringing joy back to your coffee breaks!

Bosch tassimo 
red light

Note: for certain Bosch Tassimo models, the ‘red light’ mentioned in this article may actually appear as an orange light.

How To Reset The Red Tassimo Descale Light?

To reset the red Tassimo descale light, remove the water filter and fill the tank with equal parts water and descaling solution.

Insert the correct cleaning disc (orange or yellow, based on the barcode reader position), place a container under the spout, and hold the brew button for at least 3 seconds. The machine will run a 20-minute descaling cycle. Rinse the machine with clean water afterward.

If the red light persists despite correct descaling, it could be a sensor issue. You could Ignore it but remember to manually descale every three months.

Let’s get into some more detail on how to do this below!

Following The Right Descaling Process

If you haven’t followed the right descaling process, your Tassimo could still think it needs to be descaled so the Tassimo calc light (the red light with 3 lines) won’t go off. Here is how to descale your Bosch Tassimo the right way:

  1. Remove the water filter from your Tassimo machine, as descaling won’t work properly with it in place.
  2. Pour an equal mix of water and descaling solution into the water tank until it reaches the level marked with the descaling symbol. You can use a generic descaler like this one.
  3. Insert the cleaning disc into the machine and close it up.
  4. Place a container, which can hold at least 500 mL, under the machine’s dispensing spout.
  5. To begin the descaling process, press and hold the brew button for a minimum of 3 seconds. You’ll know the descaling process has started when both the green and red lights begin to flash at the same time.
  6. The machine will then slowly flush the descaling solution through its system and into the bowl. This whole process will take about 20 minutes. When the red light finally goes off, it means the descaling process is complete.

After descaling, you need to rinse out your machine by running a lot of clean water through it. When the machine is thoroughly rinsed, you can put the water filter back in.

If you’ve previously tried to descale your Tassimo, but used the wrong method, you can use just water to correctly perform the descaling process.

If for any reason you stop the machine before it finishes the full cycle, the red light will stay on and you’ll have to start the whole process from scratch.

Use The Right Cleaning Disk

If the Bosch Tassimo red light won’t go off after descaling, or the machine won’t start the descaling process then you might be using the wrong service disk.

There are two types of cleaning disks for Tassimo machines – yellow and orange. The type you need depends on your Tassimo model.

How can you tell which disk is right for your machine?

The color of the cleaning disc you need for your machine, either orange or yellow, depends on the position of the barcode reader in relation to the finger tab.

If the barcode reader is at right angles to the finger tab, you need a yellow disk. If the barcode reader is directly under the finger tab, you need an orange disk.

The only difference between the two discs is the position of the barcode relative to the finger grip.

The Red Descale Light Is Still On

If you’ve descaled your Tassimo machine as instructed and yet the red descale light continues to glow, this could be due to a potential descale sensor issue.

Sensors in these machines are designed to notify you when descaling is required, but they might malfunction and fail to register that the descaling process has been completed.

The sensor issue may result in the descaling light persisting even after conducting the descaling procedure correctly. Despite the light, your machine may still function properly.

In cases like this, a feasible solution is to ignore the light and continue using your machine, but remember to manually descale every three months. Regular descaling is critical for maintaining your machine’s longevity and the quality of your beverages.

How To Reset The Tassimo Red Cup Light?

If the red light on your Tassimo stays on, you can try these two solutions:

Clean The Censor

If your coffee machine doesn’t operate and instead displays a red cup light, this could be because the machine’s sensor can’t read the barcode on the T Disc.

To fix this, open the lid of your Tassimo and take out the plastic disc holder.

Take a clean, damp cloth and thoroughly clean the area around the sensor, ensuring all residue or dirt is removed. This should allow the sensor to properly detect the T Disc again.

Once the area is clean, you can start putting back the Disc holder that you removed earlier.

Before you start brewing coffee again, it’s a good idea to run a test using only water with a yellow or orange clean disc. If the machine operates correctly during this test, this indicates that the problem is resolved and you can go back to using your coffee machine as normal.

Check The Water Tank

If your coffee machine is making noises like it’s making your drink, but nothing is coming out into your cup and the red cup light comes on, there might be an issue with your water tank.

First, make sure the tank is put in properly. If the tank is in the right spot, look at the floater. If it’s not moving, clean your water tank and make sure the float can move freely.

Now, see if your Tassimo can make your coffee. Remember not to take out the tank while your coffee, tea, or hot chocolate is being made.

How To Reset The Tassimo Red Refill Water Light?

The problem you’re dealing with is probably related to a magnet in the water reservoir of your coffee machine. This magnet is responsible for sensing the amount of water in the tank. Over time, the magnet might have lost its magnetic strength, causing the fill light to remain on.

The first step to fixing this issue is to get to the magnet. You do this by taking out the water tank from your machine. Inside the tank, you’ll see a small black cover or door. That’s where the magnet is.

Take a look at the magnet and see if it’s positioned correctly. If it isn’t, then you should try to put it back where it’s supposed to be. But, if moving the magnet doesn’t help, it could mean that the magnet has lost its magnetism.

In this case, you’ll need another small magnet. You can often find these in old gadgets or children’s toys.

Before installing the new magnet, test it by placing it on the machine where the old magnet was. Doing this will complete the magnetic circuit, which will let the machine know that the water tank is full. This should turn off the fill light.

You can either place the new magnet as it is, or you could secure it with something like a floss string to keep it steady.

After you’ve replaced the magnet, you can put the water tank back into the machine. Now, it’s time to check if your fix has worked.

Turn on the machine and see if the fill light turns off when the water tank is full. If you’ve followed these steps correctly, your machine should now be working as it should.

If you don’t want to mess around with replacing the magnet, you could just buy a new water tank from Amazon.

bosch tassimo coffee

The Last Thing You Could Do

If you’ve tried all possible solutions in this article and the red light on your Bosch Tassimo is still on.

The best thing to do is to reach out to Bosch customer service. If your coffee maker is still under warranty, they will likely send you a new one.”


Summing up, troubleshooting your Bosch Tassimo machine doesn’t have to be a dreaded task.

By understanding what each red light signifies and following our guided steps for descaling, using the correct cleaning disc, cleaning the sensor, and even dealing with the water tank or the magnet issue, you can easily navigate your way through and keep your Tassimo running smoothly.

Remember, a well-maintained machine not only lasts longer but also ensures the high-quality beverages you love. Don’t let a flashing red light come between you and your perfect cup of coffee, tea, or hot chocolate!

Thanks for reading!