DungenessLeaf
Member
- Joined
- Jun 6, 2017
- Messages
- 20
2014 Leaf, 66k miles, no brake issues until now.
Went to brake and noticed a slight more pedal movement without braking. More movement on the brake pedal and the car stopped. Then noticed that with additional force, the brake pedal went to the pedal stop. Turned off the master switch and on again and it seemed better but this could have been from cycling the pedal up and down. Drove round and the car did stop correctly, but after pressing on the brake pedal to stop the car additional pressure would make the pedal go completely to the hard stop on the pedal.
I am not sure if this is normal or not because I don't remember every pushing the pedal that hard before, only enough to stop the car. There are no warning lights and no codes on LeafSpy. I am an aircraft, auto, and everything else mechanic so my experience tells me that there is air in the fluid system. The brake fluid is at the top full mark and there are no leaks we can find.
Could someone try to press their Leaf brake past firm and see if it goes to the hard pedal stop and report back? A force measurement shows 40 pound of force to go to the hard stop. Do difference on mine but try with the car off and on. Looking on this post, https://www.mynissanleaf.com/viewtopic.php?t=30566&start=50
page six about half way down, there is a cross section of the master cylinder with the electric motor boost and a description of the operation. In looking at the scross section, it looks like with no power, the brake pedal should still "firm up" upon compressing the fluid in the master cylinder.
Thanks!
Went to brake and noticed a slight more pedal movement without braking. More movement on the brake pedal and the car stopped. Then noticed that with additional force, the brake pedal went to the pedal stop. Turned off the master switch and on again and it seemed better but this could have been from cycling the pedal up and down. Drove round and the car did stop correctly, but after pressing on the brake pedal to stop the car additional pressure would make the pedal go completely to the hard stop on the pedal.
I am not sure if this is normal or not because I don't remember every pushing the pedal that hard before, only enough to stop the car. There are no warning lights and no codes on LeafSpy. I am an aircraft, auto, and everything else mechanic so my experience tells me that there is air in the fluid system. The brake fluid is at the top full mark and there are no leaks we can find.
Could someone try to press their Leaf brake past firm and see if it goes to the hard pedal stop and report back? A force measurement shows 40 pound of force to go to the hard stop. Do difference on mine but try with the car off and on. Looking on this post, https://www.mynissanleaf.com/viewtopic.php?t=30566&start=50
page six about half way down, there is a cross section of the master cylinder with the electric motor boost and a description of the operation. In looking at the scross section, it looks like with no power, the brake pedal should still "firm up" upon compressing the fluid in the master cylinder.
Thanks!