The washers can't deliver enough fluid to clean the screen with the wipers. It's a Minor defect, but it's a genuine fail and it's on the list of things that catch people out — plenty of cars arrive with an empty bottle in summer.
Wording as it commonly appears on an MOT certificate: “Windscreen washer providing insufficient washer liquid”.
What does it mean?
The washers can't deliver enough fluid to clean the screen with the wipers. It's a Minor defect, but it's a genuine fail and it's on the list of things that catch people out — plenty of cars arrive with an empty bottle in summer.
How serious is it?
Usually recorded as: Minor. The tester assesses the actual vehicle on the day, so your certificate is what counts.
What normally causes it?
- An empty reservoir, which is the single most common reason
- Blocked jets, often from wax after a car wash or from frozen residue
- A failed washer pump, or a blown fuse shared with something else
- A split reservoir or a pipe knocked off behind the bumper — the bottle empties itself overnight
What a mechanic would check
Fill it, try it, and listen. Pump buzzing but nothing coming out means a blockage or a disconnected pipe; total silence means power, fuse or pump. A pin through the jet clears most blockages, and I always aim them back onto the swept area afterwards.
What might need replacing
- Screenwash
- Jet cleaning or new jets
- A washer pump
- A pipe or reservoir repair
Can you still drive it?
Fine mechanically, but a salted, filmed-up screen into low winter sun is genuinely dangerous. Keep the bottle topped up with proper screenwash, not water, so it doesn't freeze.
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This is general guidance from a UK mechanic, not a substitute for a physical inspection. Only the tester who inspected your vehicle can confirm what was recorded and why.