Brake Warning Light On... but everything working
Posted: Apr 27, 2024 11:56 PM
Hi
So, last weekend one of the hydraulic lines started leaking quite bad. Removed the line (it's the high pressure one that goes from the pressure flow regulator to the steering box), left it at a shop so they would replace the hose parts with new one. Checked that the hose still has the restrictor on it. Put it back where it should go. Before filling up with new ATF, I replaced both switches on the PFR because I had bought them new a while ago, since mine were leaking.
After everything was done I added ATF, I turned the steering wheel both ways several times to remove air, turned the car on, turned the steering wheel again (wheels in the air) several times. Everything was fine.
Today I went for a drive and a couple seconds after starting the car the brake warning light came on. After a bit of diagnostics it's the switch on the top, the one closes below 1.5bar.
Tomorrow I might put the old one in just to see what happens, what I find weird is that the car works as expected, steering wheel moves smoothly, no extra strengh needed, power brakes also work just fine, even the brake bomb works as I have to pump like 20 times when the car is off to loose all brake assistance.
What does that switch monitor? Even though I suspect the switch might be bad, I also suspect that if the line I changed has the restrictor removed/tampered with it might have the same effect, right?
So, last weekend one of the hydraulic lines started leaking quite bad. Removed the line (it's the high pressure one that goes from the pressure flow regulator to the steering box), left it at a shop so they would replace the hose parts with new one. Checked that the hose still has the restrictor on it. Put it back where it should go. Before filling up with new ATF, I replaced both switches on the PFR because I had bought them new a while ago, since mine were leaking.
After everything was done I added ATF, I turned the steering wheel both ways several times to remove air, turned the car on, turned the steering wheel again (wheels in the air) several times. Everything was fine.
Today I went for a drive and a couple seconds after starting the car the brake warning light came on. After a bit of diagnostics it's the switch on the top, the one closes below 1.5bar.
Tomorrow I might put the old one in just to see what happens, what I find weird is that the car works as expected, steering wheel moves smoothly, no extra strengh needed, power brakes also work just fine, even the brake bomb works as I have to pump like 20 times when the car is off to loose all brake assistance.
What does that switch monitor? Even though I suspect the switch might be bad, I also suspect that if the line I changed has the restrictor removed/tampered with it might have the same effect, right?
