Landcruiser V8 100 2003

Submitted: Sunday, Jan 04, 2009 at 15:22
ThreadID: 64805 Views:1870 Replies:5 FollowUps:12
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Any suggestions as to fixing the vehicle's brakelights intermittently activating? Removing the ignition key and/or pumping the brake pedal makes no difference. The brakelights activate randomly without obvious reason. The battery has been flattened twice so is a bit of a worry.
The vehicle is fitted with electric brakes for the trailer. (trailer not connected at time of observed malfunction)
Any suggestions will be appreciated
Cheers / Carl
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Reply By: Sir Kev & Darkie - Sunday, Jan 04, 2009 at 15:53

Sunday, Jan 04, 2009 at 15:53
What type of brake controller??

I seem to recall that one used to cause this type of problem and was being replaced by the manufacturer FOC

Cheers Kev
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Follow Up By: Member - Carl L (VIC) - Wednesday, Jan 07, 2009 at 09:16

Wednesday, Jan 07, 2009 at 09:16
Thanks everyone for the helpful advises - yes the electric brake controller is a Tekonsha Voyager! I will front up to an auto electrician for the doings.
Cheers / Carl
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Reply By: autosparky - Sunday, Jan 04, 2009 at 16:25

Sunday, Jan 04, 2009 at 16:25
there may be 2 problems.
brake contoller
behind the brake light switch is a rubber contact grommet, this may be worn and so keeps the brake lights on.
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Reply By: awill4x4 - Sunday, Jan 04, 2009 at 19:01

Sunday, Jan 04, 2009 at 19:01
Carl, I bet you've got a Tekonsha Voyager electric brake controller.
If so, there's your problem. It a common occurrence with those brake controllers.
Tekonsha were changing over some returned Voyagers with the later Prodigy versions under warranty.
Get the Prodigy and it will be fine.
Regards Andrew.

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Follow Up By: Member - Teege (NSW) - Sunday, Jan 04, 2009 at 21:32

Sunday, Jan 04, 2009 at 21:32
Yep. Just had to change mine. As soon as I disconnected the Voyager the problem stopped.

teege
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Reply By: Member -Pinko (NSW) - Sunday, Jan 04, 2009 at 23:06

Sunday, Jan 04, 2009 at 23:06
My son inlaw had this problem and he had an auto electrician put a diode in the loop and it cured the problem. A much cheaper option than replacing the brake controller.
Stan
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Follow Up By: donk - Monday, Jan 05, 2009 at 01:24

Monday, Jan 05, 2009 at 01:24
When the diode was installed did the vehicle & van brake lights still come on when only the brake controller manual control lever was used

Regards Don
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Follow Up By: Member -Pinko (NSW) - Monday, Jan 05, 2009 at 21:37

Monday, Jan 05, 2009 at 21:37
Hi Don
The brake controller and brakes work as they normally would.
The events leading up to a diode being installed was that they (the son in law) were away from home for a week. The land-cruiser was in the carport locked up and their neighbor phoned me to say the brake lights were on in the LC. I pressed the brake pedal and the light went out so I left it. The next night the same thing so I disconnected the battery. On his return home he took it to an Auto electrician and a diode was fitted. Where or how I don't know.
Regards
Stan
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Follow Up By: donk - Monday, Jan 05, 2009 at 22:30

Monday, Jan 05, 2009 at 22:30
I don't doubt that the controller & brakes will still operate as normal but are you sure the brake lights on the vehicle & van will still come on when the manual slide lever is operated

Regards Don
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Follow Up By: Member -Pinko (NSW) - Tuesday, Jan 06, 2009 at 09:09

Tuesday, Jan 06, 2009 at 09:09
Hi Don
Give me 24 hrs and I'll ask the boy. he sleeping, come off night shift. He is an electrical fitter.
Stan
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Follow Up By: donk - Tuesday, Jan 06, 2009 at 09:45

Tuesday, Jan 06, 2009 at 09:45
No worries

Regards Don
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Follow Up By: Member -Pinko (NSW) - Thursday, Jan 08, 2009 at 17:06

Thursday, Jan 08, 2009 at 17:06
Hello again Don
The diode is fitted between the brake pedal switch and the Voyager brake unit. Cost is about $15 --- + some solder and heatshrink. The silver band on the diode goes on the brake unit side ie. the direction of current travel when the brake pedal is pushed. The problem arises when feedback from the brake unit occurs and lights up the brake lights. With the diode in the line the current becomes a one way street. The electric brakes work manually and with the foot pedal.
Hope this is of some help.
Regards
Stan
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Follow Up By: donk - Thursday, Jan 08, 2009 at 22:29

Thursday, Jan 08, 2009 at 22:29
I understand where & why the diode is fitted but when the diode is fitted does it prevent the brake lights (on the vehicle & trailer) coming on (what you want to have happen) if only the manual lever is operated to apply the trailer brakes

Imagine this situation

You are leaving a van park & decide to operate the manual lever on the brake controller to confirm the trailer brakes are working & someone is driving to close behind you & runs into you because the brake lights did not come on

With a correctly operating controller the lights will come on but when the diode is installed do they still come on ????

Regards Don
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Follow Up By: Member -Pinko (NSW) - Friday, Jan 09, 2009 at 12:08

Friday, Jan 09, 2009 at 12:08
Hi Don
I'll do a test on Saturday afternoon.
regards
Stan
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Follow Up By: Member -Pinko (NSW) - Friday, Jan 09, 2009 at 18:18

Friday, Jan 09, 2009 at 18:18
Hello Don
Your correct Don, the brake lights do not come on when the controller is manually operated. The lights only come on when the footbrake is used.
Regards
Stan
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Follow Up By: donk - Friday, Jan 09, 2009 at 20:03

Friday, Jan 09, 2009 at 20:03
Yes i thought they probably would not work

I worked at a place where fitting a diode was the fix instead of replacing the controller but i am not sure this is the best way to fix the problem

Regards Don
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Reply By: Member - Graham H (QLD) - Monday, Jan 05, 2009 at 20:09

Monday, Jan 05, 2009 at 20:09
Get hold of the Aussie distibutors.
Depending on the serial number of the unit you may get it replaced as it was the earlier ones that were faulty but I have seen on forums in the past year that people had them replaced free
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