Smart Car of America Forum banner
1 - 8 of 8 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter · #1 ·
Hi every one I writing the first time hire , I have read perhaps all posts about this problem in this forum but can,t solve the problem .
I have 2014 ED , few days ago brakes become hard and on screen is showing brake malfunction . I checked errors and finded two :
1.The vacuum pump has malfunction - there is short circuit to ground .
2.The electric relay of vacuum pump has a malfunction - there is an open circuit .
May be some body from you had the same situation or have any thought .
I have a lot of spare part from ED with bad battery so I changed vacuum pump then engine computer ( beyond the passanger seat ) , fuse box , both relays + and -
, checked all wire : on engine , under carpet , under floor , checked brake swich and sensors - no resalt .
The bigest problem - in my country there is no Smart car dealers , is Dimler but they do not trade or make service to Smart car ( am in EU , 1000 km from
Berlin !!!! :( ) ,
 

·
Registered
Joined
·
403 Posts
The vacuum pump failed, actually its windings shorted to the frame according to the error reported. This caused the second error when the fuse/breaker blew.

So why did you go beyond the simple repair of (1) replacing the pump and (2) reset the relay?

If it ain't broke don't fix it.
--
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #4 ·
The vacuum pump failed, actually its windings shorted to the frame according to the error reported. This caused the second error when the fuse/breaker blew.

So why did you go beyond the simple repair of (1) replacing the pump and (2) reset the relay?

If it ain't broke don't fix it.
--
thank you for responding , I do not checked resistance between +.- and ground becourse pump is on ruber bushing and thought can,t be shorted to the frame , I have chacked resistance existing and spare pump , thay are the same , all fuses where OK .
How I have to reset relay , by erasing error ? My friend who have diagnostic computer said that error automaticaly become inactive maybe he was wrong .
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #6 ·
thank you for responding , I do not checked resistance between +.- and ground becourse pump is on ruber bushing and thought can,t be shorted to the frame , I have chacked resistance existing and spare pump , thay are the same , all fuses where OK .
How I have to reset relay , by erasing error ? My friend who have diagnostic computer said that error automaticaly become inactive maybe he was wrong .
Just changed vacuum pump , checked errors this time I finded three errors
 

Attachments

1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top