I have a 2016 passion coupe. 6300 miles thereabouts. Bought it one week ago and had a 'Smart' mechanic give her a thorough going over, on the lift and full diagnostic. This morning drove took a 10 minute drive and home. As I pulled into the driveway, braking to stop, a message came up on the dash.. "Brake Assist Inoperative". What happened? It felt okay, but what if anything did I do, or did I do anything to cause that malfunction?? Thanking you in advance!
"Brake Assist Inoperative" !!
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You will need to scan for codes if the brake assist is inoperative. Drive the car again and maybe after a key on/off cycle, the brake assist will return to normal operation. You can also try disconnecting the battery for 30 minutes or longer to reset the computers.
That short drive I kept it running, so only one start. I left later for work, a 20 minute drive through heavy traffic, lots of braking, stop lights, ect. I kept watching for more 'error' msgs, but nothing happened. Coming home later, same kind of conditions. It hasn't repeated, so just a bit of computer glitch maybe. Shutting engine off for 2 hours, then restarting, perhaps reset it?! I appreciate your responses and will get it checked if it happens again. Thanks!!
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I am having that exact issue but I will add that for me, this hill assist error only seems to be happening in below 50f degrees weather temperature. I took it to MB dealership in Manhattan, replaced battery along with alternator and a couple other things I can’t recall at the moment. Crazy thing is after I pulled out MB dealership, I did have that same error pop up again. I’m thinking am I going crazy?! I turn off then back in the car, hill assist inoperative goes away and never shows up again.. until this week. I remember after driving away from MB dealership feeling so scared I might cause something to make the car act up again but nothing ever happened, drive so cautious for months, then back to normal driving. I do push my little smart a little hard sometimes but nothing crazy in my opinion. None the less I’ve still not figured out this issue but I guess im going to have to figure it out now. My only biggest hint is when the temperature outside drops below 50f, that’s when the Smart acts up. I probably should have put this first I guess but I own a 2016 Smart Fourtwo Proxy 453 1st Edition/Gasoline. Hopefully someone can shine a light my way on this thread. I’ve read so many other post on this forum and others about a very similar issue but they all either had diesel or ED’s so not really sure how relatable they can be. Well, if anyones reading this and can even just point me in the right direction it would be greatly appreciated. Have the car for about three years now, I’ve changed the tires, front brake pads, front rotors, battery, alternator, control arm, struts and other things I can’t recall but obviously not every thing, like I don’t think I’ve had sensors replaced or anything like that which is what I’m
leaning towards that might be the issue but I’m freaking clueless. Again if you do, thanks for reading. Glad I’m seeing more smarts around NYC.
leaning towards that might be the issue but I’m freaking clueless. Again if you do, thanks for reading. Glad I’m seeing more smarts around NYC.
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