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Brnelam *
Age: 67 Zodiac: Joined: 19 Sep 2015 Posts: 30 Location: Northumberland
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Posted: Tue Jan 29, 2019 20:59 Post subject: Brake waning light on |
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The brake warning light is on all the time on my 2003 3.2 shogun. When you start the car the light goes off then comes on after a couple of seconds. When you put the hand brake on the light gets brighter. Disconnected the fluid indicator and its still on. Abs light comes on then goes off. Any ideas
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Posted: Tue Jan 29, 2019 20:59 Post subject: Google Ads keep the POCUK free to join! |
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assassin ********
Age: 64 Zodiac: Joined: 29 Jul 2009 Posts: 5077 Location: Wherever I Wander To -- Midlands
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Posted: Wed Jan 30, 2019 3:26 Post subject: |
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Faulty switch or wiring. |
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Simonfathead *****
Age: 46 Zodiac: Joined: 17 Aug 2016 Posts: 737 Location: Sidlesham, United Kingdom
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Posted: Wed Jan 30, 2019 13:54 Post subject: |
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Have you checked the level in the brake reservoir as if this is low can light this up (or is that just the older models?) Also there is a rubber seal in the cap sometimes it can get pushed up you need to make sure the rubber insert is pulled out if that makes sense. |
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Brnelam *
Age: 67 Zodiac: Joined: 19 Sep 2015 Posts: 30 Location: Northumberland
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Posted: Wed Jan 30, 2019 15:49 Post subject: |
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The wire from the harness goes to the bottom of the master cylininder and not to the cap where the rubber seal is |
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Simonfathead *****
Age: 46 Zodiac: Joined: 17 Aug 2016 Posts: 737 Location: Sidlesham, United Kingdom
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Posted: Fri Feb 01, 2019 13:18 Post subject: |
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Yes that's right but if that seal is incorrectly seated it can affect the alarm light (don't know why) It should be extended down and not compressed into the cap. Are your brake levels ok? |
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Brnelam *
Age: 67 Zodiac: Joined: 19 Sep 2015 Posts: 30 Location: Northumberland
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Posted: Fri Feb 01, 2019 20:01 Post subject: |
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Yes the seal is fine and fluid level is fine. If the wiring harness is disconnected from the master cylinder should the light still be lit?
Also what conditions should there be on the two wires coming from the main harness, they are black and black/yellow ? Put a tester on and there is no power on either wire. Shorted the two wires from the harness and then on start up light stays on all the time and not going out for a couple of secs then coming back on as it does when they are not shorted. The two wires coming out of the master have an open circuit so it looks to me as if the master cylinder must have to give out some sort of signal to put the light out after the chech when the ignition is on. |
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caseyj ****
Age: 45 Zodiac: Joined: 12 Dec 2009 Posts: 256 Location: paignton, south devon
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Posted: Fri Feb 22, 2019 11:36 Post subject: |
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Not sure if you got this problem sorted but I had the same on my mk2 pajero, tried all the usual, checked levels ,brakes and connectors . Turned out it needed and fluid change, old brake had lot of water in and was filthy. Changed and no problems since, and it stops better |
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Mark3 LifeTime Member
Age: 61 Zodiac: Joined: 13 Feb 2009 Posts: 4016 Location: Rainham Village, Essex.
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Posted: Fri Feb 22, 2019 12:35 Post subject: |
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Simonfathead wrote: |
Yes that's right but if that seal is incorrectly seated it can affect the alarm light (don't know why) It should be extended down and not compressed into the cap. Are your brake levels ok? |
Isn't this the other way around? i have many times pressed the seal back into the cap to extinguish a brake warning light...... |
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peteinchad LifeTime Member
Joined: 07 Jan 2013 Posts: 15079 Location: UK
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Posted: Fri Feb 22, 2019 12:52 Post subject: |
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Mark3 wrote: |
Isn't this the other way around? |
Yep - pressed up into cap = light off. |
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2.25diesel *****
Age: 33 Zodiac: Joined: 07 Jul 2014 Posts: 733 Location: West London, UK
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Posted: Fri Feb 22, 2019 23:26 Post subject: |
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I have also had the same problem on my MK1. Somehow the rubber seal in the master cylinder cap manages to expand down into the reservoir.
Has anyone ever proven what causes this? |
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