Good evening guys, I have a problem with the abs of my Dodge Ram 2500.
In practice, when I turn on the car (by pressing the brake pedal) the ABS and parking brake light are off but when I release the brake pedal the lights come on.
The ABS sensors (front L and R, rear differential) are ok.
The Brake light switch are ok.
can someone help me?
Thank you all

 

What year is your truck? Does the speedometer work properly?

 

Way off topic here but how did that truck get to Italy?

 

In a shipping container! The same way the stolen(high end) vehicles from the us get over seas.

 

hello guys, thanks for the answers. my truck was produced in 1999 and was imported in 2002 in Italy by a Dodge dealer. the speedometer is working properly, the problem occurs just release the brake pedal when stationary

 

How's the brake fluid? Any of the line been changed lately? How is the pedal? Excessive travel? Spongy? Losing any fluid??

 

hi to all guys today I changed the brake fluid but the abs light is always on just release the brake pedal when stationary.
i checked the brake light switch in the brake pedal:
when i press the brake pedal:
pins 1 and 2 continue
pins 3 and 4 does not continue
Pins 5 and 6 does not continue
Brake pedal released
pins 1 and 2 does not continue
pins 3 and 4 continue
Pins 5 and 6 continue
Pin 1 corresponds to the Brake Switch Sense
pin 2 corresponds to the ground
pin 3 corresponds to the speed control supply
pin 4 corresponds to the speed control brake output switches
pin 5 corresponds to the output brake lamp switch
pin 6 corresponds to the fused b (+)
-----making a bridge between the pins 5 and 6 the abs light comes on.
can someone help me? thank you so much

 

You really need to have someone plug in with a scanner, and see what it is whining about.

 

In Italy, that might be a stretch...

There is something about the abs acting up if you drain too much fluid out. Doe thing about resetting it somehow. I'll look... (You can look too)

If I help, do I get to stay at your place for free?

 

While I'm looking, here is some info on the brake switch, but it does sound like it is working normally. Maybe the brake push/release thing is due to pressure in the master cylinder and the ABS actuator.