Just a bit ago I went to Costco in my 2019 E450 Cab.

Everything normal. When I came out, used my foot to open the trunk to put in what I bought. Everything fine. Got in the car, started it and did the two things I always do... set it to economy and turn the stupid start/stop thing off. I didn’t see the start/stop light on when I turned it off but thought maybe I wasn’t paying attention.

Didn’t think anything, then I tried to turn down the volume by the knob in the center console. Didn’t work so I figured my phone did something dumb and turned it down on the steering wheel. Worked. Was using the touchpad to scroll through tracks on my iPhone no problem.

To make a long story short (too late) I eventually noticed the car wasn’t going into gliding mode like it usually does in E mode. Looked down and saw it was in comfort. Thought I had a brain fart and pulled down on the mode switch to change it to E and nothing happened. Tried all the buttons around the touchpad and none of them worked. The touchpad worked - I never thought to try the knob because I never use it.

When I got home, I turned the car off, opened the door, waited a few seconds and started up again... still none of the buttons around the touchpad worked. Not even the power button (we all know COMAND gets stupid sometimes and you have to force a reboot by holding the power button down). Reboot didn’t work. I didn’t think of trying the buttons in the upper center console (climate, media, vehicle, etc)

I noticed something I’d never seen before (and I notice everything &#128556. There was a slow blinking round, small LED light next to the analog clock.

Figured I had to get my frozen food out of the trunk so I opened the trunk from the inside, took some of my stuff out and looked and saw the little red light still blinking. When I got to the last of the items in my trunk, I took them out then put the ragtop partition back down (I had put it up to make room).

I looked over and noticed the red light wasn’t blinking any more. Got in the car, turned it in and all the buttons worked again.

Any idea?

Ps... sorry for the Tom Clancy novel 😬

 

the blinking light next to the analog clock is the security alarm light. So if you lock your car, that will start to blink. Or let's say the car is locked, and you unlock the trunk, that light will blink. However, this is my experience in a sedan, where if unlocked, the light I dont think will blink. In a cab, maybe there is still security when unlocked because of roof. Anyway, I dont think the light has to do with anything here, just a coincidence that you noticed it. It shouldn't have been on while driving. As for the buttons, chalk it up to a glitch.

 

Agree could be a glitch caused by sequence of events. Consider having dealer check for stored fault codes under warranty and check battery voltage.

 

Hi! Im a little late, but i just had EXACTLY the same sequence of events. Did you find out what the issue was?

 

This just happened to my E63. Interested to see what it is.

 

See if a scanner that can read MB codes pull up any codes, if not check the fuses, any blown?

 

Went to get it scanned today, but now everything works as designed and intended 😂

i think it maybe because i set the alarm 🚨 with the fuel filling door open. Then closed it while the alarm was activated.

so, could be some sort of glitch.

i will say this… it seemed to be some sort of limp mode when it was flashing last night. Because this car makes over 800HP and it felt stock

 

Glad it is all sorted out.