I have noticed at other sites if the switches are never used they contacts get dirty & the switch sticks / refuses to work.
I usually play a tune on the parking brake using the release switch when I service an RRE, not had an issue on any of the ones on my fleet.
Maybe some bad contact in the wiring or emergency switch for the brake
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Regards!
Hello,
Thank you for the information.
The truck is working as should work every thing is OK.
I will look again tomorrow on the truck maybe it is somethings that I mist. It will be easy if I have the workshop manual and the wiring diagram.
Any way thank you very much.
Best regards.
That button is the emergency release switch for the parking brake.
Using that switch you can either tow / push the truck with the parking brake released OR if you put the truck in emergency mode it will allow you to drive the truck in limp home mode.
Hello Nacsand,
I have check everything and it was OK.
In the fuse box under the footstep it is a button and that one it was switched on. I switched off the button and the truck is working fine. I do not now what exactly does that button but the truck is working fine now.
Thanks for your support.
Best regards
Hi,
According to one service bulletin error 3:560 changes to 3:460, so follow 3:560 instructions:
3:560 Break in the parking brake circuit.
Make sure that the brake is released using
the Emergency release switch [S133].
If the brake is released in an emergency:
* Check that the contact [X131] is complete
and that conductor 95 is undamaged.
* Replace MCU.
If the brake cannot be released:
* Check that the resistance in the parking
brake's coil is ~32 ohm.
* Check that there is 48 V at [Q1:1], towards
B- and that conductor 27 is undamaged.