US1

Hello to everyone.Newbie and I need help.I have a 04 E320.Today the ac blower fan quit.Then on way home warning says reduced stopping power and I think "stop driving".Only 2 miles from home so made it.
I checked fuses I read codes on dash scrolling with steering wheel controls.May have cleared or changed something.Next would not start.Cooling fan ran fast when key turned on.Everything worked just didnt turn over.
Battery 2 days old and fully charged.Swapped in correctly and drove 200+ miles no issues.I tried my spare key and same thing.
Next attempt to crank and key wont turn.Spare key same thing.Both are working(checked with camera)>Now no windows and no fob functions like trunk open or door lock.Window stuck down.
Only thing that works is interior lights and radio.Oddly now the steering wheel will not lock.Turns freely.
I`m certainly no MB mechanic but have been around Benz since 1968 and I`m at a loss.
Maybe someone out there had same problem or can suggest a process of elimination.
Beautiful car with great paint and interior.Hate to have to sell for rough book value.Like I said all was fine and then "Murphy" struck cause I was enjoying the ride too much.
Thanks for suffering a newbie.

Plutoe

Barrow your girlfriends OBD scanner and check and post the fault codes.


Then see if you could simply list the problems you are having rather creating a narrative.

US1

cMazara

SBC unit at most.

Gangrene3075

My W211 did this when the SBC Pressure Accumulator was faulty. As stated above...Check for codes and post.