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Another Disco II stuck in park

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Old 02-15-2016, 04:05 PM
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Default Another Disco II stuck in park

2000 Discovery II
153K miles

Symptoms:
1) Won't shift from park, even with brake depressed.
2) Brake lights on even with ignition off.
3) Have to take foot off of brake to stop engine.
4) With car off, when brake is depressed the dash panel lights ups as if attempting to start.
5) Will start without issue.

Attempted solutions
1) Disconnect, wait, reconnect battery. No fix.
2) Brake pedal switch (Brake Light Switch & Wiring Assembly Kit (Genuine Part # XKB500120 ) - Land Rover switches from Atlantic British) removed and tested. No fix.
3) All fuses examined. No issues/no fix.


I'm stumped here. Partially by the problem/symptoms in general, and mostly by not knowing enough about automotive electrical systems to know the next steps in the diagnostic process.

Any suggestions would be very much appreciated.

Thanks,
Ken W. Alger
 
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Old 02-15-2016, 04:25 PM
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It could be the shifter solenoid. If you step on the brake pedal you should be able to feel it release with your hand on the shifter. If that is your problem you can remove the shifter and shifter cover on the console to bypass or solenoid.

Originally Posted by KeizerRover
2000 Discovery II
153K miles

Symptoms:
1) Won't shift from park, even with brake depressed.
2) Brake lights on even with ignition off.
3) Have to take foot off of brake to stop engine.
4) With car off, when brake is depressed the dash panel lights ups as if attempting to start.
5) Will start without issue.

Attempted solutions
1) Disconnect, wait, reconnect battery. No fix.
2) Brake pedal switch (Brake Light Switch & Wiring Assembly Kit (Genuine Part # XKB500120 ) - Land Rover switches from Atlantic British) removed and tested. No fix.
3) All fuses examined. No issues/no fix.


I'm stumped here. Partially by the problem/symptoms in general, and mostly by not knowing enough about automotive electrical systems to know the next steps in the diagnostic process.

Any suggestions would be very much appreciated.

Thanks,
Ken W. Alger
 
  #3  
Old 02-15-2016, 04:41 PM
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How does one check for a faulty shifter solenoid and what is the standard replacement procedure?
 
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Old 02-15-2016, 05:18 PM
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God is that brake light switch OVERPRICED!!!!!!!!!!!!!! You can get the exact same switch at any Auto Zone for 12.00!!!!

You would certainly hear a click or feel the shifter thump if the solenoid was retracting when you push the brake pedal. If it isn't retracting you can simply remove the shifter bezel find the solenoid nipple and push it back out of the way and shift it once the LR is running.

People act like it's a nightmare if the solenoid acts up and they swear to always carry a spare brake switch (good for having working brake lights, but not needed in order to shift)... I guess they've never seen other vehicles where the darn solenoid is so far buried deep down inside the center console it requires like 2HR just to tear it down and find it... On a D2 it's like a 2min from start to finish job and that's taking your time.

Also you said the brake switch was moved and tested? Did you actually replace it? Is it the old style or identical to the newer design that you linked to? The old style usually broke a contact inside which rendered it useless. I haven't seen any newer designed ones fail like that.
 

Last edited by Best4x4; 02-15-2016 at 05:21 PM.
  #5  
Old 02-15-2016, 06:19 PM
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Best4x4;

No, the switch I have currently is SWITCH BRAKE LIGHTS P38A, DISCOVERY II & FREELNDR, RNL115, XKB100170 - Rovers North - Classic Land Rover Parts

Any recommendations on how to proceed would be great.

Would the switch replacement solve the solenoid problem? What about the funky situation with the engine shut off and the console panel lights turning on simply by depressing the brakes?

Thanks a ton for your input, knowledge, and advice.
 
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Old 02-15-2016, 06:36 PM
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Originally Posted by KeizerRover
Best4x4;

No, the switch I have currently is SWITCH BRAKE LIGHTS P38A, DISCOVERY II & FREELNDR, RNL115, XKB100170 - Rovers North - Classic Land Rover Parts

Any recommendations on how to proceed would be great.

Would the switch replacement solve the solenoid problem? What about the funky situation with the engine shut off and the console panel lights turning on simply by depressing the brakes?

Thanks a ton for your input, knowledge, and advice.
Go to Auto Zone & grab a new style one for 12.95, then report back.
 
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  #7  
Old 02-15-2016, 07:25 PM
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I'm stumped here. Partially by the problem/symptoms in general, and mostly by not knowing enough about automotive electrical systems to know the next steps in the diagnostic process.
Best bet with your limited knowledge/experience is to follow the other easy recommendations on brake switch and solenoid. Neither should cause all your issues but with these vehicles much is possible. x,y,z switch could be a culprit as well due to interface with reverse lights?
Gear position switch - The gear position switch outputs signals that are related to the position of the selector lever assembly. The switch is installed on the selector shaft on the left side of the gearbox. Slotted mounting holes allow the switch to be turned relative to the shaft for adjustment. A fly lead connects the switch to the vehicle wiring. Movement of the selector lever assembly turns the selector shaft, which operates six pairs of contacts in the switch.
The outputs of the W, X, Y and Z contacts are monitored by the EAT ECU and the BCU to determine the position of the selector lever assembly.
Gear position switch W, X, Y, Z outputs The Park/Neutral contacts output to the BCU and, on diesel models, the ECM. The Reverse contacts output to the BCU, the reversing lamps, the SLABS ECU and, where fitted, the ACE ECU and the electrochromic interior mirror.
 
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Old 02-15-2016, 07:57 PM
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Originally Posted by Best4x4
Go to Auto Zone & grab a new style one for 12.95, then report back.
Just do this. Stop overthinking it. I don't know what you did when you say you tested your existing brake light switch but odds are that is the problem.
 
  #9  
Old 02-18-2016, 04:48 PM
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Put new switch in. All symptoms still exist.

Since this is... was?... my wife's daily driver, the idea of having the gear shift mechanism open for her to depress the solenoid is somewhat less than desirable just to get around town. The fact that the brake lights stay on even when the car is off is a problematic long term issue as well.

Suggestions for the next troubleshooting step?

Thanks,
Ken
 
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Old 02-18-2016, 05:02 PM
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Is P light illuminated on gear selector and P indicated on dash?
......
 


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