Mercedes Fuse Box / SAM Replacement, Windshield Wipers

I've learned that the hard way myself! Working on air suspension with the door open!! I have one a W203 in here now with a no spin no start. ME and front Sam sitting in water that came from the carwash. He's calling the carwash to see if they'll pay for it since it happened there!!

Great Tip Andrew about fuses not being fitted to the SAM that would definitely catch some Techs out. A lot of Euro cars will not allow the wipers to work when a bonnet is up. Not long ago my tech tried to bled the fuel after replacing a fuel filter and could not turn the lift pump on in a VAG Diesel Golf. The scan tool reported select P/N we are thinking what is P/N it took a while to realise

On vehicles like this will the engine crank if you close the latch with the hood open or are there other switches involved?

I think Andrew was making a general statement about front SAM replacement. When you replace it you make sure all of the functions work before you release it to the customer. If you're chasing a wiper problem then trip the front latch before testing or you're always going to have to no trigger to the motor as your diagnosis!!

I was just asking a general question on the hood operation. It is as simple as closing the latch to defeat to no start strategy or are there other measures that need to be taken if you want to crank the engine with the hood open?

Hi Bob, the engine will start and run with the hood up it is just the wipers that will not operate until the hood is closed, possibly so the wipers will not get caught up on the open hood. Guys just a bit of trivia, down under here in Australia we call the car roof or turret the hood, and what you call a hood we call it a bonnet. What you call a fender we call it a mudguard, what you call a