Thread: D2a No power!!

I assume the bcu is a computer? Why don't I simply reboot it?

This guy in Europe is having a similar problem to me: Interior Lights / Door Sensor / BCU Issue? - Land Rover Forums : Land Rover and Range Rover Forum




These people offer a bcu exchange service: Discovery BCU

I'm sorry but that info with the switches is wrong unless it' about door switches for courtesy lights, the manual switches are giving direct earth to the bulb and the live is permannent there, the BCU is involved only in courtesy light management the manual switching is a simple circuit so a short to earth due warter ingress there can be an issue, the BCU can be blamed only igf the lights are not going out after lock command

Originally Posted by sierrafery

I'm sorry but that info with the switches is wrong unless it' about door switches for courtesy lights, the manual switches are giving direct earth to the bulb and the live is permannent there, the BCU is involved only in courtesy light management the manual switching is a simple circuit so a short to earth due warter ingress there can be an issue, the BCU can be blamed only igf the lights are not going out after lock command

Yes, applies to courtesy lights only. OP reference was about lights going out after a period of time. So switches on door will cause a short timeout on lights after door closed; if door left open for too long lights will time out; using switches on light fittings to turn on light will not cause time out.

Originally Posted by Islandnomad

I assume the bcu is a computer? Why don't I simply reboot it?

BCU - body control unit. So "computer"; actually a controller. I don't know if / believe you can reboot it as such.

Originally Posted by bsperka

Yes, applies to courtesy lights only. OP reference was about lights going out after a period of time. So switches on door will cause a short timeout on lights after door closed; if door left open for too long lights will time out; using switches on light fittings to turn on light will not cause time out.

More specifically, what I think is going on, is that the interior lights aren't timing out, but staying on and flattening the battery, but I've only ever seen this happen once and it seems to be an intermittent problem..

It appears that LR no longer sell D2 BCU's YWC000310, that can't be right can it?

I may have one at home i will check and get back to you

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