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Discussion Starter #1
Hey peeps, I have odd problem, when I select park I get reverse lights on but I think that's the cable needing an adjustment but it also on in gear 3 and 2, car runs fine with no errors just this, its a 1996 2.5 dse automatic
 

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Does the dash and the LED next to the shifter show the correct gear? The reversing lights are turned on by the BeCM when the oiutput from the XYZ switch on the side of the gearbox is showing it to be in reverse. As the XYZ switch also drives the dash and LEDs, then I would expect those to be showing wrong too.
 

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1995-2002 Range Rover P38A
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The light beside the selected gear is correct and it doesn't display anything on dash
When you say "it doesn't display anything on dash", could you be more specific? Does it still show that you're in park, or some other gear?
 

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Discussion Starter #5
It shows the indicated gear light at gearbox but nothing on dash, I recently had problems were it was sent away twice to be coded to ecu and key and now everything is working except this problem and sunroof and I don't really want to send it away again its literally running perfectly, the reverse in park I know is cable underneath because when I disconnected it earlier and pulled rod few more mm light went off but its the reverse in 3 and 2 I find annoying even though I havnt used then I know about it lol
 

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If the LED next to the gear lever is reading correctly, then it should also be displaying what gear you are in next to the odometer, like on this pic



Where it's showing I'm in Park. The wiring from the XYZ switch which controls what is displayed on the dash and which LED next to the gear lever is lit, runs from the switch to the gear lever with a splice off it under the centre console which then goes to the BeCM and gearbox ECU. The BeCM then tells the dash what gear to display and, if you are in reverse, switches on the reversing lights, while the gearbox ECU checks to confirm that the gear set by the mechanical cable and the switch are the same. If they don't match then you will get a Gearbox Fault message and it will go into limp mode.

It isn't the cable that needs adjusting to stop the reversing lights coming on in park, it is the XYZ switch that needs rotating on it's mounts to get it correct.
 

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+1 Richard. Blob, do you have access to a nanocom? It will let you read the underlying xyz switch state. If the switch is playing up it will do unpredictable things. Not heard of no gear sign on the Dash before though.
 

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Blob, do you have full range on the gear selector ie from 1st through to Park?
 

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ok - so then I think the switch orientation maybe ok - in which case it's the electronics. Do you ever have starting issues (ie key turn, and no engine response) as if you were trying to start when in gear? (Dodgy xyz may send an "in gear" signal to Becm even when you're in park). Does your dash NEVER display a gear selection ?
Ideally needs to get on a nanocom - where are you?
 

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Discussion Starter #13
It Starts fine bud and no it never displays anything and I live in a small village called twynhol in Dumfries and Galloway between Stranraer and carlisle
 

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ah ok, so nowhere near London then. Ideally you need diagnostics, else you'll be chasing your tail. Presumably the reverse lights will come on without the engine on (but ignition on), and by just moving the gear selector ?
If the front wipers are on, and you engage whichever gears are putting the reversing lights on, does the rear wiper now come on? This would be further confirmation that the BECM thinks reverse has been engaged (ie not some other weird wiring issue).
C325 (2,9) is the outgoing connector on the BECM for the reverse lights. More interestingly C626 (8,9,18) carries the incoming xyz signals, if you have no nano you can confirm that each microswitch is working by reading these pins (the manual has a table in it which will give you the switch combinations necessary for the becm to read each gear)
 

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Discussion Starter #15
If I have ignition on but not engine then yes selecter shows gears selected correctly and if wipers are on rear wiper comes on when reverse selected but not when 3 and 2 is selected as far as I'm aware just reverse lights in them gears
 

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interesting...

I don't have the answer, but what I would be trying is looking for the +ve voltage that's getting to the reversing lights . For the reverse lights to be specific to position of the gear lever though it really still points at the xyz switch. I would test the outputs of that first at C626, and the signal form the BeCM at C325.
It's a bit weird that there's no gear selection at the dash - that's beyond my experience. The rest of the display text works? Did "they" do anything funky to your BeCM ?
 

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was the gear selection displayed on the dash before it went?
 

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Do your mirrors dip when you select reverse? Do they in 2nd/ 3rd?
 

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Discussion Starter #20
It never displayed before becm went away and no the mirrors don't dip in any gear bud I just tryed the trailer connections white plug on left and pink cable on right and they all live in park, reverse, 3 and 2, I was wondering if the gear selecter indicator is removed could I get to the led for reverse then I would disconnect cable for reverse lights in boot and run connection to led so there only on in reverse or maybe a switch what is the law regarding rear lights/reverse lights
 
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