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[Mutha Jugs n Speed]

I'm getting the spanner warning light coming on now and again, code reader says 1 DTC found, but never a code. I've tried it a few times but nothing, and car the is running perfectly. I know this is one of those 'how long is a piece of string?'' questions, but I've got a 500mile rounder to do next week and don't want to push my luck with a possible developing fault......if there is one??

[TheBoy]

Try the pedal trick, as probable the generic code reader is a piece of junk.

[Mutha Jugs n Speed]

Can you do the pedal trick on a 3.2? did it on the 3.0 which worked OK.

[TheBoy]

Can you do the pedal trick on a 3.2? did it on the 3.0 which worked OK.

I assure you you didn't do a pedal trick on an Omega 3.0.

Pedal trick works on 2.6/3.2

[GastronomicKleptomaniac]

Tbf there's nothing saying you can't use a bike pedal rather than a paperclip on a cable throttle car...

Pedal trick works on my 3.2

[Mutha Jugs n Speed]

Actually it wasn't the 3.0,it was an early 2.0 that wasn't OBD compatible, I stand corrected.

[VXL V6]

Pedal trick works on 2.2, 2.6 and 3.2, everything else is a paperclip to flash the codes out.

[TheBoy]

Pedal trick works on 2.2, 2.6 and 3.2, everything else is a paperclip to flash the codes out.

Not sure about 2.2, dont think it does on either petrol or diesel.  Nor does it work on BMW engined Omegas.

2.2 petrol, 2.6 and 3.2 are broadly OBDII compliant, though the 2.2 is really fussy. Technically, they are all only EOBD compliant.

[Doctor Gollum]

My 03 Desmond did allow the pedal trick, a couple of other.cars that I worked on

[TheBoy]

My 03 Desmond did allow the pedal trick, a couple of other.cars that I worked on

99% certain it didn't work on Tunnie's 2.2 or AA's 2.2, hence they needed tech2.  Tunnie's was definately on the latest firmware available for his engine ECU....

Maybe there are some odd variants about

[Mutha Jugs n Speed]

Pedal trick shows PO571, Cruise control/brake switch ''A'' malfunction, hence having no brake lights upon checking. So now the question...is this a standard brake  switch, or being linked to the cruise control is it different to a non cruise switch?

[Doctor Gollum]

The guide for retrofitting cruise control should clarify

A quick look suggests the brake light switch is universal, but manual cars require the clutch switch to be fitted as well.

So to answer your question simply replacing the brake light switch should solve the issue.

As an aside, if you press the brake pedal with the ignition on/engine off, can you hear a click by the selector lever and does it change out of park without issue?

[Mutha Jugs n Speed]

Unfortunately....no click from the selector, whether that will change with a new brake light switch fitted. Also there's a hint of an electrical gremlin in the hazard lights which will need  attention from my rubber hammer.    

[STEMO]

Unfortunately....no click from the selector, whether that will change with a new brake light switch fitted. Also there's a hint of an electrical gremlin in the hazard lights which will need  attention from my rubber hammer.

You mean fortunately, it means it's definitely the brake switch.

[cam.in.head]

good point from dg above . does it actually come out of park ? . we assume so cos you have never said car was undriveable or is the solenoid system somehow not in use