B4 – Changing the wiper blade
Check the wiper blade at regular intervals. If there are any signs of scoring or
material abrasion on the rubber lips, it must be replaced.
A wiper blade set contains 5 wiper blades (see "Spare parts/consumables").
When all wiper blades in a set are worn, you need a new set as in this case the
wiper shaft, O-ring and cover also need to be replaced. (The mechanical wiper
does not need to be detached from the OTT ecoN.)
Risk of damage to mechanical wiper (gearing)
Avoid mechanical loads on the wiper shaft and the wiper blade!
Never turn the wiper shaft by hand.
At every fifth wiper blade change: First uninstall the entire wiper shaft and then
install a new one; see Appendix B2.
Slightly lift the locking mechanism with a fingernail or a small slotted screwdriv-
er and pull the wiper blade forwards.
Align the new wiper blade (see Figure B8) and slide it onto the wiper shaft until
it locks into place (clicking sound).
Locking mechanism
Wiper blade
Wiper shaft
Fig. B8: Changing the wiper blade.
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