All things SMG

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The SMG Gearbox

Text here...


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(Fitted in different box - offside of bonnet)


SMG fluid level

Check the fluid level!


Read error code(s)

Possible codes here...
56 etc