Topping up screenwash is one of the simplest car maintenance tasks and helps keep your windscreen clear for safe driving.
Screenwash (windshield washer fluid)
A funnel (optional, helps avoid spills)
Access to water if you’re using concentrated screenwash
Park your car on level ground and switch off the engine.
Pull the bonnet release inside the car.
Secure the bonnet open.
Look for a plastic tank with a windscreen symbol (spray/wipers icon) on the cap.
It’s usually a translucent tank so you can see the fluid level.
Do not confuse it with coolant or brake fluid reservoirs.
If the tank is translucent, you can often see the fluid level from the outside.
If it’s low or empty, it’s time to top up.
Unscrew or lift the cap marked with the washer symbol.
Keep the cap clean to avoid dirt entering the system.
Pour screenwash into the reservoir slowly.
If using concentrated screenwash, dilute it according to the instructions (often 1:1 with water, but varies by product).
Use a funnel if needed to avoid spills.
Fill until it reaches near the top or the MAX line (if marked), but don’t overfill.
Secure the cap tightly.
Wipe away any spills.
Turn on the ignition.
Spray the windscreen washers.
Check that fluid sprays evenly and the wipers clear the screen properly.
Refill more often in winter, when salt and grime build up quickly.
Use winter screenwash in cold weather to prevent freezing in the system.
Never use plain water long-term, as it can freeze or encourage bacteria and poor cleaning.
Don’t mix different screenwash types if possible—this can reduce effectiveness.
Avoid getting screenwash in your eyes or on skin for long periods.
If the washer jets stop working after topping up, the system may be clogged or frozen.