Body Processor Unit
#1
Body Processor Unit
I am looking for a BPU that is from a car that the country requires daylight running lights. I know Canada-built cars had them, but I'm unsure about any other country. Is the part number different for those countries that require DLRL, which is LNA2500AA? I am not sure if they are all the same and just have been programmed different.
#3
Off the top of my head there was more involved then the BPU or even the external lamp control module
There was a light sensor and this light sensor is different on the later X308
Is the BPU change for other than the headlights as there is a BPU hard reset
There was a light sensor and this light sensor is different on the later X308
Is the BPU change for other than the headlights as there is a BPU hard reset
Last edited by Parker 7; 01-09-2024 at 11:32 AM.
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piper 888 (01-10-2024)
#4
I think that all is required is the BPU. I had a Candian Parts car and just moved over the BPU over to Big Red, and it worked. I got the headlight sprayers activated also. I was just wondering if it is a part number or if I just need to get a BPU from any country except Jags that were made for the US.
#5
Genuine Body Processor Module-with Security For Jaguar Xj 1995 - 1997 (from 720125 To 812255) Classic | Jaguar Land Rover Classic Parts
Hit the plus icon and it has many country differentials
Hit the plus icon and it has many country differentials
#7
DRL Again
I looked everywhere for a Canadian BCM, but I had no luck. Did the UK require them? Will it work in a US car? Is there a way to program them so that you can turn them on? I can kick myself for leaving it in my old car.
Going to try this to see if it works...
Going to try this to see if it works...
Last edited by cdma; 10-15-2024 at 08:53 PM.
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#8
The round shaped light sensor at the front windshield used on the X300 for the climate control extra effort bias may not work for the auto daylight lost vs. all daylight headlights
The X308 has a sensor different or wired differently front windshield light sensor as the X308 has daylight headlights ( or daylight missing which needs the light sensor )
The X308 has a sensor different or wired differently front windshield light sensor as the X308 has daylight headlights ( or daylight missing which needs the light sensor )
Last edited by Parker 7; 10-15-2024 at 09:20 PM.
#9
#10
#11
Spud Maat got me thinking
See page 80 for a 1997
The headlight relays are ground seeking and since the ignition switch up front provides a ground ..................................
The LS3 and RS3 connectors are down very low in the corners of the front cabin below the ECU and the opposite corner , this negates the need for the special BPM , purchase and removal
On the ignition switch in the start sequence as you bring the key to the starter enable pin X one of the other ACC pins drops out , the run pin stays active ( ground )
Once you bring it out of start and back to run position the Acc pin position becomes active again ( ground)
For the exterior lights ( 2 modules under the hood for 1995 and replaced by 1 for the later in the boot ) the ACC relay in the trunk fuse box will be provide a ground path through the IG switch to tie into your exterior
lamp module input pins
In this case you can use the ACC relay pulling coil control wire to run the ground seeking external lamp module
There is a concern that too many relay's pulling coils place too much current through the ignition switch contacts ( it's got it's current limits ) so you would place one external piggy back relay to provide the ground path ( as the power contacts ) least the original design king relays in the corners of the fuse boxes drop back open stalling the car
This opens a another approach of using the king relays but you would not want headlights on during starter rotation through the IG switch run position enabled king relays
You can forget about using the ACC relay pulling coil wire in the trunk and LS3 and RS3 connectors and just intersect it at the light control switch assembly wires in the dash for both headlight and exterior lights
See page 80 for a 1997
The headlight relays are ground seeking and since the ignition switch up front provides a ground ..................................
The LS3 and RS3 connectors are down very low in the corners of the front cabin below the ECU and the opposite corner , this negates the need for the special BPM , purchase and removal
On the ignition switch in the start sequence as you bring the key to the starter enable pin X one of the other ACC pins drops out , the run pin stays active ( ground )
Once you bring it out of start and back to run position the Acc pin position becomes active again ( ground)
For the exterior lights ( 2 modules under the hood for 1995 and replaced by 1 for the later in the boot ) the ACC relay in the trunk fuse box will be provide a ground path through the IG switch to tie into your exterior
lamp module input pins
In this case you can use the ACC relay pulling coil control wire to run the ground seeking external lamp module
There is a concern that too many relay's pulling coils place too much current through the ignition switch contacts ( it's got it's current limits ) so you would place one external piggy back relay to provide the ground path ( as the power contacts ) least the original design king relays in the corners of the fuse boxes drop back open stalling the car
This opens a another approach of using the king relays but you would not want headlights on during starter rotation through the IG switch run position enabled king relays
You can forget about using the ACC relay pulling coil wire in the trunk and LS3 and RS3 connectors and just intersect it at the light control switch assembly wires in the dash for both headlight and exterior lights
Last edited by Parker 7; Yesterday at 11:20 AM.
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V126man (Today)
#12
not sure of exact VINs and if there was a period when both were done. maybe market dependant.
but my car is FEB 1995 build and has the 1 combined lamp control module
whereas my parts car is AUG 1994 build (must be one of the earliest) and has 2 modules.
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Parker 7 (Today)
#13
G’day Gents,
Not long after I bought my car I took it to an independent Jag workshop that had a high level OBD reader which could also be used to reprogram the BPU.
When connected to the data port all the available programmable options were available in drop down menus on the reader so I could pick and choose whichever ones I wanted. From memory it was an AutoLogic device but I may be wrong, it was a long time ago. I mentioned to the tech that I might buy one but when he said his cost over $15,000 I shelved that idea.
It might be worth trying to track down a workshop with a similar reader or perhaps a dealer could help out.
There is a list of dealer programmable options in one of the Jag manuals and if I can find it I will post the info.
Cheers,
Jeff.
Not long after I bought my car I took it to an independent Jag workshop that had a high level OBD reader which could also be used to reprogram the BPU.
When connected to the data port all the available programmable options were available in drop down menus on the reader so I could pick and choose whichever ones I wanted. From memory it was an AutoLogic device but I may be wrong, it was a long time ago. I mentioned to the tech that I might buy one but when he said his cost over $15,000 I shelved that idea.
It might be worth trying to track down a workshop with a similar reader or perhaps a dealer could help out.
There is a list of dealer programmable options in one of the Jag manuals and if I can find it I will post the info.
Cheers,
Jeff.
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b1mcp (Today)
#15
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