brake pad warning message how to remove

[spatz]

hi folks, I have been putting new brake pads on the fronts on a 2006 Vantage V8 and since I did not
have any new sensors i just cable tied the old ones away.
How can i remove the warning message in the cockpit ?

many thanks

[Laser Sag]

Would think you would need to press the read button to remove the message on each start up, may not work on something deemed to be a safety item though.

[bogie]

you will need to short/blank the sensor wires, sometimes you can buy plugs off ebay to do it

Ive had this "issue" before when fitting non OE pads without sensor holes to my old Audi

[simonpa]

Yeah - you usually need to fit new sensor(s) to clear the code, but it may be enough to short the internal wiring.
The sensors normally work by wearing through and earthing via contact with the brake disk AIUI..

[spatz]

thanks if the earthing is in the brake sensors themselves they should have two wires and it should be enough unpugging them or remove the sensors, any comments ?

[bogie]

on my old audi you fitted some blanking plugs on the sensor wires ...guess it depends on the wiring ...someone had gone to the effort to make the plugs to fit on end of loom that did the job for you

Aston must be using someone elses OE parts, so im sure theres something available ....

Edited by bogie on Wednesday 20th August 22:36

[KarlFranz]

simonpa said:

Yeah - you usually need to fit new sensor(s) to clear the code, but it may be enough to short the internal wiring.
The sensors normally work by wearing through and earthing via contact with the brake disk AIUI..

Close, but it is actually the opposite behavior. The circuit is normally complete from the driver information module (DIM) to earth ground. It is a normally-closed circuit (short) and when the sensor breaks, it becomes an open circuit. The brake disc itself doesn't form any part of the electrical circuit—its only function is in gradually grinding away the plastic housing at the end of the sensor wire once the pad gets thin enough that the sensor comes in contact with the disc. Eventually, the grinding gets far or deep enough into the plastic that the portion of the wire inside breaks causing an open circuit. The DIM detects this and sets the brake warning.

You can fool the system by closing the circuit again. To do this, you need to splice both wires from the sensor cable together. This would allow you to use a "spent" sensor wire while not triggering the brake warning. Since the sensor itself is already worn and cannot be re-used, you could cut it off the end of the cable, strip the insulation back at the ends of both wires, splice both ends together, wrap with insulation tape, and then cable-tie the cable back. I would only do this as a temporary measure until the sensor cable is replaced. It is there for a purpose after all. Of course, some aftermarket pads do not have the sensor slots and you will have to cable-tie the cable back as the OP did. In either case, the circuit needs to be closed in order for the warning to go away.

[spatz]

thanks KarlFranz, that makes perfect sense

uwe

[simonpa]

^^^^^
Wot he said - thanks KarlFranz!

[huggy1]

Have you tried

1 Ignition on
2 Press and hold T1/T2 and read at same time
3 When orang triangle flashes 3 times release both buttons
4 Ignition off then on again

Should clear messages

[KarlFranz]

That procedure is for resetting the 12month "scheduled maintenance required" message. It sets the internal counter back to 0 months. As long as there is an open-circuit on one of the two brake sensor inputs to the DIM, the brake message will remain displayed.

Edited by KarlFranz on Wednesday 3rd September 02:30

[huggy1]

KarlFranz said:

That procedure is for resetting the 12month "scheduled maintenance required" message. It sets the internal counter back to 0 months. As long as there is an open-circuit on one of the two brake sensor inputs to the DIM, the brake message will remain displayed.

Edited by KarlFranz on Wednesday 3rd September 02:30

Message received and understood.