VE Brake Light Switch Adjustment

[Lensman]

Good aye all.
Is there a way of adjusting the sensitivity or position of the brake light switch? Or the brake pedal itself? My cruise control is not always activating, however if I pull the pedal back with my foot it will operate normally again. It must be only a matter of a mm or 2. There seems little to no adjustment on the switch itself or am I missing something?

 

[MYVESSV8]

possibly the switch is worn, or needs cleaning, there is a small amount of adjustment available

 

[07GTS]

are they the type of switch that has teeth each side and u just push it in till it stops on the pedal then it should be good..? so it may have some adjustment or as mentioned might just need replacing

 

[Lensman]

Hi 07GTS. No, they look a little like a tuning fork.

I've been to Holden and asked about a brake relearn procedure, which they can do but were surprised I had a problem with it.
I'm starting to think I'm overthinking this. As the cruise works every time if I lift the brake pedal with my foot I'm thinking maybe I should be checking the spring/return mechanism because if the brake pedal was returned fully everything would work as it should. Just need to work out what makes the brake pedal return to it's home position.

 

[Lensman]

possibly the switch is worn, or needs cleaning, there is a small amount of adjustment available

Thanks MYVESSV8. I unbolted it the other day but was unable to disconnect the connector. I'll have another go on the weekend.

 

[cewing]

Maybe see if the centre rear brake light comes on when your cruise control won't activate. If it's canning the cruise then you'll see the light (if it can be seen from in the car....)

 

[Lensman]

I've put a multimeter on the switch and I'm not all that happy with the way it reads, (a little inconsistent) so I've ordered a new one. Will report as to my success with the new switch. Thanks all.

 

[Lensman]

UPDATE : New switch arrived yesterday. Put a ohm meter on the old one and compared to the new one, same result (it seems to be a variable resistor type switch, values would change as the lever was moved). So I'm thinking that purchase was a waste. Anyway, put the new switch in and found the brake light switch would work perfectly for about three seconds, then the lights would come on with no pressure on the brake pedal. Every time. So I reached up behind to the top of switch and held it from one extreme to the other and at one extreme it operated correctly. So I loosened the screw and tightened it up and now it seems to work perfectly. ABS, ESC and CC working perfectly again. No RELEARN required. The adjustment range was probably 0.5mm, but that small amount made all the difference.
HINT : Put boot lid up so you can see reflection of upper brake light in back window in daylight.
Thanks all for your help and advice.

 

[blackve76]

UPDATE : New switch arrived yesterday. Put a ohm meter on the old one and compared to the new one, same result (it seems to be a variable resistor type switch, values would change as the lever was moved). So I'm thinking that purchase was a waste. Anyway, put the new switch in and found the brake light switch would work perfectly for about three seconds, then the lights would come on with no pressure on the brake pedal. Every time. So I reached up behind to the top of switch and held it from one extreme to the other and at one extreme it operated correctly. So I loosened the screw and tightened it up and now it seems to work perfectly. ABS, ESC and CC working perfectly again. No RELEARN required. The adjustment range was probably 0.5mm, but that small amount made all the difference.
HINT : Put boot lid up so you can see reflection of upper brake light in back window in daylight.
Thanks all for your help and advice.

same issue with mine when I bought it, cruise fine somedays then next wouldn't work. Must be as you say .5mm and all good.