All things SMG

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The SMG Gearbox

Burkhart SMG WiKi...
SMG WiKi


Fault finding

Symptoms:

Gearbox not selecting gears.
Pump not running, no pressure in accumulator(needs 45 bar to shift to 0). Brake pedal microswitch not made?
Jumping out of gear.
Cog of doom!

Diagnosis/Solutions:

#Salmon Relay
#SMG fluid level
#Read error code(s)



Salmon Relay

Under the bonnet, there is a rectangular black relay box with four Allen head bolts on the nearside - there is only one salmon coloured relay in there.
Pt No. 12631742690 Relay changer salmon red: From:09/06/1994
Supersedes: 12630153635(01/01/2003 — 12/11/2006)
NB: Used in TWO places
1) Relay for hydraulic pump SMG K5360
2) Secondary air injection pump relay K6304(located offside of car)


SMG fluid level

Check the fluid level!


Read error code(s)

Possible codes here...
56 etc