Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: ians on 25 February 2010, 11:17:17

Title: Auto box interlock
Post by: ians on 25 February 2010, 11:17:17
Seems to be playing up.  (I'm talking about the function that requires pressure on the brake pedal in order to shift out of Park)

There is usually a click from the selector when the brake pedal is pressed - presumably the locking solenoid firing.  This click doesn't always happen on mine.  When it does I can move the selector as normal.

So is this likely to be a switch at the brake pedal end (where is it?) or a problem with the solenoid (again - how do you access that?)

Cheers,
Ian
Title: Re: Auto box interlock
Post by: Varche on 25 February 2010, 11:39:32
Don't know the answer to where the solenoid is.

There is a manual switch to free the gear lever located under the gear lever gaiter for desperate times. My car won't start in neutral only in park. I just live with that.
Title: Re: Auto box interlock
Post by: Andy B on 25 February 2010, 11:42:04
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So is this likely to be a switch at the brake pedal end (where is it?)  .......

You need a new brake switch. It lives above the brake pedal  :y
Title: Re: Auto box interlock
Post by: ians on 25 February 2010, 11:47:31
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So is this likely to be a switch at the brake pedal end (where is it?)  .......

You need a new brake switch. It lives above the brake pedal  :y

is that a dealer part or scrappy job?
Title: Re: Auto box interlock
Post by: RobG on 25 February 2010, 12:22:52
Either and if you`ve got cruise make sure it`s the 4-pin one
Title: Re: Auto box interlock
Post by: Andy B on 25 February 2010, 13:15:39
Quote
Quote
Quote
....

So is this likely to be a switch at the brake pedal end (where is it?)  .......

You need a new brake switch. It lives above the brake pedal  :y

is that a dealer part or scrappy job?

They're not expensive new, there's always the chance of buying a dud or near dud 2nd hand switch.
Title: Re: Auto box interlock
Post by: ians on 25 February 2010, 14:24:55
Quote
Quote
Quote
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....

So is this likely to be a switch at the brake pedal end (where is it?)  .......

You need a new brake switch. It lives above the brake pedal  :y

is that a dealer part or scrappy job?

They're not expensive new, there's always the chance of buying a dud or near dud 2nd hand switch.

Indeed.
Does anyone have a part no.?
This is a 98 Elite (so with cruise)
Title: Re: Auto box interlock
Post by: TheBoy on 25 February 2010, 16:55:51
Could be brake switch (top of pedal), but also solenoid. To get to (and check) solenoid, put up on the leather in front of the gear lever.  You can see solenoid, it has a bright yellow lever for manually disengaging.
Title: Re: Auto box interlock
Post by: Andy B on 25 February 2010, 17:43:38
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....but also solenoid. To get to (and check) solenoid, put up on the leather in front of the gear lever.  You can see solenoid, it has a bright yellow lever for manually disengaging.

Could be, more likely to be the brake switch though  ;)
Title: Re: Auto box interlock
Post by: TheBoy on 25 February 2010, 17:44:21
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Could be brake switch (top of pedal), but also solenoid. To get to (and check) solenoid, put up on the leather in front of the gear lever.  You can see solenoid, it has a bright yellow lever for manually disengaging.

Could be, more likely to be the brake switch though  ;)
Probably, but as I'd test before replacing parts, solenoif easier to get a meter on ;)
Title: Re: Auto box interlock
Post by: ians on 26 February 2010, 10:57:20
Is the 'brake switch' the same device that switches the brake lights on?  So if that is the culprit, then the brake lights will not be on either?

But if the brake lights are on, then more likely the solenoid?

Are both parts straightforward access?

Cheers
Ian
Title: Re: Auto box interlock
Post by: TheBoy on 26 February 2010, 11:02:08
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Is the 'brake switch' the same device that switches the brake lights on?  So if that is the culprit, then the brake lights will not be on either?

But if the brake lights are on, then more likely the solenoid?

Are both parts straightforward access?

Cheers
Ian
Solenoid easy to get at, Brake switch easy to get at with your head upside down in foot well. Bugger to remove though
Title: Re: Auto box interlock
Post by: Entwood on 26 February 2010, 11:11:02
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Is the 'brake switch' the same device that switches the brake lights on?  So if that is the culprit, then the brake lights will not be on either?

But if the brake lights are on, then more likely the solenoid?

Are both parts straightforward access?

Cheers
Ian


As I recall  .. the switch is a twin element affair .. so one side - interlock - can fail but the other side - brake lights - still work.

A multimeter check should enable you to confirm the switch .. :)