I have a 2017 Mercedes GLS450. The maintenance interval for changing brake fluid in the car is every 2 years. This seems excessive. Is there a legitimate reason (for purposes of helping the owner and not the dealership) to change brake fluid every 2 years?
Also, the manual says to replace the spark plugs every 5 years/50,000 miles. That also seems excessive considering iridium plugs are supposed to last for 100,000 miles.
What do you reckon is an acceptable interval, for your vehicle’s routine maintenance?
Brake fluid is hygroscopic, so you want to replace it before it goes bad.
I think it’s a given any Mercedes requires high maintenance..
But what is different about Mercedes brakes that is different from say Honda brakes? Mercedes doesn't make or design brakes. Companies like Bosch and TRW do that and they sell to everyone. Why would Mercedes need fresh fluid every two years if Honda says 5 years is ok?
I agree with you mate. I think it’s designed that way so that the dealers can swindle customers. All said & done though, I’d still follow the oem’s service intervals when it came to engine oil, coolant, power steering & brake fluid. Atleast for legal reasons, incase something bad happened in future, and you needed to take the OEM to court.