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Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 9:20 am
by Bcure
Hey all

just looking for some help, i have changed the standard headlights (halogen) out on my PX3 2021 XL 4WD Ranger to the 2021 XLT/Wildtrak
(Bi-LED Type) headlights

issue im having is the DRL (LED Strip) is going out after a few minutes or a hour, sometime both headlight DRLs will go out or only one DRL will go out
all other functions of the headlights work 100% correct. low beam, high beam, park light etc and have no issues

i have gone into forscan and looked at all the DRL settings in my PX3 XL and compared these my friends 2021 wildtrak and all the settings were the same, i just changed blub type to LED not halogen

i am getting fault codes for both DRLs when they go out, B124A:11 right side and B124B:11 left side. (Circuit sort to ground), i have checked the headlight wiring pins and locations and the are correct
so i am now starting to wonder if the bright DRL LEDs are drawing to much current and popping the FETS in the BCM.... so maybe the Wildtrak and XLTs have a DRL relay or a different code in the BCM...

Any help or ideas would be great
https://www.saeb.net/download/file.php? ... ew&id=2058

Cheers

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 1:40 pm
by saeb
As with others in this thread https://www.saeb.net/viewtopic.php?f=22&t=6323 send saved BCM abt.

What circuit are the DRLs using?

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 2:55 pm
by Bcure
Hi there

DRLs are on the factory pins and connectors, wiring. nothing has been changed
40 and 36 from the BCM plug and headlights pins 7 on the headlight connectors
Dedicated DRL circuit

that code is the same in my BCM already
726-26-02 xxxx-xxx0-xxxx

just checked the wildtrak code and its different
726-26-02 XXXX XXX2 xxC

Worth a try?

Cheers

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 3:29 pm
by saeb
There are 4 types. So you can try from 0 to 4.

Yes looks like MY21.75 is 2 so I'm happy with that.

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 3:43 pm
by saeb
Also I would change to type 2

726-29-01 to xxxx-xxxx-x2xx

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 4:05 pm
by Bcure
Have adjusted the code to 726-26-02 XXXX XXX2 xxC
All seems to work been for a drive and they didn't fault
Any idea what the difference is between the last letter of the code being XXA or XXC

What is this code changing 726-29-01 xxxx-xxxx-x2xx, mine is x0XX

really appreciate the help
will be donating to the page

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 4:14 pm
by saeb
Checksum

Both are frequency related. Last change is either DRL or Low Beam frequency. Documents are not clear which is which.

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 4:46 pm
by Bcure
ok so suggest action would be to

XXC back to XXA for 726-26-02

and to change 726-29-01 to xxxx-xxxx-x2xx and test to see the out come?

as again MUCH appreciate the help

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sat Aug 28, 2021 5:22 pm
by saeb
Checksum is calculated by Forscan. I is based over the whole block so whatever Forscan put there is correct. Last 2 characters of each line is checksum.

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sun Aug 29, 2021 10:19 am
by Bcure
Morning

so i changed 726-29-01 to XXXX-XXXX-X2XX and everything is still running correct and working
code 726-26-02 XXXX XXX2 XXC is the same as it wont let me change XXC back to XXA

Thanks for all your help so stoked she's all good
Cheers

Re: Ford Ranger PX3 XL headlights change out to PX3 XLT/Wildtrak Headlights

Posted: Sun Aug 29, 2021 11:18 am
by saeb
You cannot change the Checksum. Forscan will self calculate and fix it. Ignore the last 2 characters of every line block, they are irrelevant to you.