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Home >> Smart >> 2012 >> Fortwo Pure >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Brakes - Pneumatic System - 451 Chassis >> Testing & Repair >> Remove/install electric vacuum pump relay - AR43.05-P-1324MEX

Remove/install electric vacuum pump relay - AR43.05-P-1324MEX

MODEL 451.390/392/490/492 with ENGINE 780.993 

Fig 1: Identifying Electric Vacuum Pump Relay Remove/Install Components
G10978487DANGERNOTESNOTESREMOVINGINSTALLINGIMPORTANTREFER TO SELF-DIAGNOSTIC SYSTEMSCourtesy of MERCEDES-BENZ USA
DANGER Risk of death  when touching components on vehicles with high-voltage on-board electrical system Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not  carry out any work on high-voltage on-board electrical systems. AS54.00-Z-0001-01A
NOTES Note on the voltage on-board electrical system   AH54.00-P-0010-01A
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove transmitter key and mains plug    
2 Unlock catch hook (2) using a suitable screwdriver (3) and remove relay housing (1) IMPORTANT Slide relay housing (1) to the right outwards from the bracket.  
3 Unlock catch hook (4) and remove relay housing (1) out of relay socket (5)    
4 Pull out relay for brake vacuum pump (+) (K109) out of relay socket (5)    
5 Install in the reverse order    
6 Connect Star Diagnosis and check relay for brake vacuum pump (+) (K109)    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04MCC