- Garden
- Pressure washers
No pressure indicator
Kärcher No pressure indicator on pressure washer: gun LCD
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
On Kärcher K 5 and K 7 Smart Control high-pressure cleaners, No pressure indicator on the high-pressure gun is resolved by checking and replacing the two AAA batteries, reducing the distance between gun and cleaner, and re-establishing the connection in the 60 s coupling window.
Safety first
Stop and check this first
- Always switch off the device at 0/OFF and pull out the mains plug before any care and maintenance work, and never touch the mains plug and socket with wet hands; never modify or bypass safety devices.
- Always let go of the lever of the high-pressure gun before turning the 3-in-1 Multi Jet spray lance to change the spray type, otherwise the spray lance can be damaged.
Safe checks you can perform
- Check and replace the two AAA batteries in the high-pressure gun
- Reduce the distance to the cleaner and run the 60 s coupling procedure
- Pull the mains plug for 20 s if coupling failed or press - for 10 s for Bluetooth
Leave these tasks to a qualified professional
- Do not attempt this professional task: Inspection of the Smart Control gun and cleaner by authorised Kärcher Customer Service
- Do not attempt this professional task: Replacement with original Kärcher accessories and spare parts
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Inspection of the Smart Control gun and cleaner by authorised Kärcher Customer Service
What they doIf the pressure indicator still does not appear on the high-pressure gun after replacing the two AAA batteries, reducing the distance and repeating the 60 s coupling after a 20 s unplug, authorised Customer Service checks the system.
They must show youthe gun LCD showing the 1-SOFT, 2-MEDIUM and 3-HARD areas of application and the radio and Bluetooth symbols.
In writingthe inspection result for the Smart Control unit, any parts replaced, and warranty coverage.
Replacement with original Kärcher accessories and spare parts
What they doWhen a material or manufacturing defect on type 1.317-xxx (K 7 Smart Control) or 1.324-xxx (K 5 Smart Control) prevents the pressure indicator from working, a dealer or authorised Customer Service fits original Kärcher parts.
They must show yousuccessful gun coupling within the 60 s window and pressure selection via the +/- buttons.
In writingthe original Kärcher part reference fitted and the service job confirmation.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Check and replace the two AAA batteries in the high-pressure gun
- Who:
- you, with two fresh non-rechargeable or rechargeable AAA batteries and dry hands.
- How:
- switch the cleaner off at 0/OFF, lock the high-pressure gun lock, and press the locking slide on the gun. Open the battery compartment, remove the old batteries, insert two new AAA batteries while paying attention to the correct alignment of the poles, close the battery compartment, and dispose of used batteries in accordance with statutory provisions.
- Result that matters:
- the battery status icon (empty, almost empty, medium or full) appearing steadily on the gun LCD.
- If the battery status and pressure indicator return on the display:
- the two AAA batteries were exhausted.
- If fresh AAA batteries are installed but no pressure indicator appears:
- reduce the distance and re-couple the gun.
- Evidence to keep:
- a photo of the high-pressure gun LCD display after inserting the two AAA batteries.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
Reduce the distance to the cleaner and run the 60 s coupling procedure
- Who:
- you, standing next to the high-pressure cleaner and its mains socket.
- How:
- reduce the distance between the high-pressure gun and the high-pressure cleaner. Plug the mains plug for the high-pressure cleaner into a socket: the device switches to coupling mode for 60 s. During those 60 s, press the + key and the - key on the high-pressure gun simultaneously for at least 3 s.
- Result that matters:
- the pressure levels (1-SOFT, 2-MEDIUM, 3-HARD), the radio symbol and the Bluetooth symbol appearing on the display.
- If the pressure levels and radio symbol are shown on the LCD:
- coupling is successful.
- If the coupling attempt failed:
- perform the 20 s unplug wait before coupling the gun again.
- Evidence to keep:
- a photo of the LCD display showing whether the pressure levels and radio symbol appear.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
Pull the mains plug for 20 s if coupling failed or press - for 10 s for Bluetooth
- Who:
- you, no tools needed.
- How:
- if the coupling attempt failed, pull the mains plug for the high-pressure cleaner out of the socket, wait 20 s, plug it back in and press the + and - keys simultaneously for at least 3 s again; if you need to establish the 2.45 GHz Bluetooth connection to your mobile device later, press the - key for 10 s.
- Result that matters:
- the pressure indicator responding when pressing the +/- buttons and turning the 3-in-1 Multi Jet spray lance.
- If the pressure levels display and adjust properly:
- resume operation.
- If the malfunction is not resolved using this overview:
- contact authorised Kärcher Customer Service.
- Evidence to keep:
- a note of the part number and serial number from the type plate and a short video of the coupling attempt.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Garden
- Brand
- Kärcher
- Product type
- Pressure washers
Known code variants
- Flashing battery symbol on high-pressure gun
- Karcher gun LCD blank
- Karcher sin indicador de presión
- Karcher Smart Control gun no display
- No hay indicador de presión en la pistola de alta presión
- No pressure indicator
- No pressure indicator on the high-pressure gun
- Pistola Smart Control sin indicador de presión
- Símbolo de batería parpadeante Karcher
What it means
Operating instructions 59688190 (K 7 Smart Control and K 7 Premium Smart Control) and 59797770 (K 5 Smart Control and K 5 Premium Smart Control) document No pressure indicator on the high-pressure gun in the troubleshooting guide. The K 5 Smart Control manual instructs you to check the batteries and replace them if necessary, reduce the distance between the high-pressure gun and the high-pressure cleaner, and re-establish the connection (over the 868.7-869.2 MHz, 0.53 mW SRD radio module) as described in chapter Initial Start-Up. Other models may differ, and this state alone never proves that a component is faulty.
Warnings and stop conditions
- Highsource verified
Always switch off the device at 0/OFF and pull out the mains plug before any care and maintenance work, and never touch the mains plug and socket with wet hands; never modify or bypass safety devices.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
- Lowsource verified
Always let go of the lever of the high-pressure gun before turning the 3-in-1 Multi Jet spray lance to change the spray type, otherwise the spray lance can be damaged.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
Symptoms and causes
Probable causes · in order
- Exhausted AAA batteries in the Smart Control high-pressure gunCommon
The K 5 Smart Control troubleshooting table instructs you to check the batteries and replace them if necessary, and the K 7 Smart Control manual notes that the two AAA batteries are exhausted if nothing or a flashing battery symbol is visible on the gun display.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
- Excessive distance between the high-pressure gun and the cleanerPossible
The K 5 Smart Control manual states that standing too far away prevents the pressure display from working and instructs you to reduce the distance between the high-pressure gun and the high-pressure cleaner.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
- Lost wireless connection between the high-pressure gun and the cleanerPossible
Both the K 5 Smart Control and K 7 Smart Control manuals instruct you to re-establish the connection to the high-pressure cleaner following the 60 s coupling steps in chapter Initial Start-Up.
Evidence: Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190) · Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
Virtual technician
Does No pressure indicator still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Kärcher K 7 Smart Control and K 7 Premium Smart Control Operating Instructions (59688190)
Alfred Kärcher SE & Co. KG · 2020 · official_doc
- 2
Kärcher K 7 Smart Control y K 7 Premium Smart Control Manual de instrucciones (59688190)
Alfred Kärcher SE & Co. KG · 2020 · official_doc
- 3
Kärcher K 5 Smart Control and K 5 Premium Smart Control Operating Instructions (59797770)
Alfred Kärcher SE & Co. KG · 2025 · official_doc
- 4
Kärcher K 5 Smart Control y K 5 Premium Smart Control Manual de instrucciones (59797770)
Alfred Kärcher SE & Co. KG · 2025 · official_doc
Was this entry useful?