If the windscreen wipers begin to move while you are changing the wiper blades, you can be trapped by the wiper arm.
![](../../assets/images/d26df8cc5ff648b9354ae3656080f18e_1_-----.gif)
![](../../assets/images/119f527922b89093354ae3654b1eaeaf_1_-----.jpg)
![](../../assets/images/423969810b52a683354ae36531593424_1_-----.png)
If the colour of the maintenance display changes from black to yellow, the wiper blades should be replaced.
The duration until the colour changes varies depending on the usage conditions.