The owner of a 64-plate BMW 335d forked out £163 after he was refused a repair to his washer system under warranty by BMW.
Simon Raeburn, of Tavistock in Devon, had used Morrisons’ own brand screen wash, which costs 50p per litre compared to the manufacturer’s branded wash at £4.50 per litre.
Speaking to Auto Express, Simon said: “They told me I should have been using BMW’s anti-bacterial washer fluid, and, should the jets be blocked, the warranty would not apply.
He was pressured to foot the bill for a screen wash system flush, new bottle reservoir and strainers.
However, the owner’s manual makes fails to mention that manufacturer’s screen wash must be used.
Instead, it states: “Do not mix any screen wash concentrates of different manufacturers, as this may otherwise block the washer nozzles.”
A BMW spokesperson said: “It’s imperative that the correct concentration of washer additive is added during all top-ups to the screen wash reservoir.
“In this case, the customer has used a screen wash from Morrisons, which isn’t of the correct concentration level.”
When questioned about the manual’s wording, the spokesperson added: “In this case, the customer has used a non-BMW product, therefore mixing different fluids and invalidating the BMW warranty.”
Simon had said he’d been using the Morrisons screen wash for around two years and Auto Expressed argued that he therefore couldn’t have mixed the fluids.
However, BMW claim that “there may still be traces of residue from the previous product”.
It seems with this logic, owners can only ever use BMW washer fluid or risk a warranty clause.
BMW refused to refund Mr Raeburn and said it has no plans to update the wording in its manuals.
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