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Hi all, I'm just posting here to see if anyone else has had this issue. We have a 2017 Pilot Elite. I've done lots of searching and can't find anything besides some early Jeeps with the ZF 9HP that were recalled for randomly dropping into neutral.
I personally first experienced this issue a few weeks ago when I was moving over to the left lane to pass a semi. I pressed the gas pedal down about halfway expecting a downshift as usual, but to my surprise the car did nothing and instead started slowing down as if I had let go of the gas. At this point my foot was on the floor. Nothing happened at all, it didn't even rev up as if it had slipped into neutral. Just kept slowing down, no rpm jump, nothing. At this point I suspected the worst so I started pulling over, but just as I did so, everything went back to normal. I tried doing what I just did again and it downshifted without a hitch. I went out on some country roads trying to replicate the exact situation multiple times (same speed, throttle input, everything) and it never happened again.
Fast forward to today, I get a call from a family member who also drives this car that had the exact same issue. Trying to pass and the transmission just disengaged, slowing down instead of speeding up.
We've contacted the dealership and are doing what we can to fix this. In the meantime I'm just wondering if anyone else has heard of this happening with the ZF 9HP. I feel like it may be an issue with the dog clutches not engaging properly and the ECU freaking out and not opening the throttle despite user input. I imagine this is likely fixable with a TCU reflash but I'm hoping we don't need to go through the pain of trying to get a new transmission.
We have owned Hondas in the past and had great experiences, but we've been feeling pretty sour about this car and Honda in general now. Had the fuel injector replacement done at 38k which was a hassle since the relevant warranty period had ended 2k miles before then. We've also had odd transmission behavior throughout the entire life of the car. After some particularly unsettling incidents, we took it to the dealer and were told (surprise) it's normal behavior and nothing unusual could be replicated. I'm hoping that this scary problem is something easily fixable.
Tyler
I personally first experienced this issue a few weeks ago when I was moving over to the left lane to pass a semi. I pressed the gas pedal down about halfway expecting a downshift as usual, but to my surprise the car did nothing and instead started slowing down as if I had let go of the gas. At this point my foot was on the floor. Nothing happened at all, it didn't even rev up as if it had slipped into neutral. Just kept slowing down, no rpm jump, nothing. At this point I suspected the worst so I started pulling over, but just as I did so, everything went back to normal. I tried doing what I just did again and it downshifted without a hitch. I went out on some country roads trying to replicate the exact situation multiple times (same speed, throttle input, everything) and it never happened again.
Fast forward to today, I get a call from a family member who also drives this car that had the exact same issue. Trying to pass and the transmission just disengaged, slowing down instead of speeding up.
We've contacted the dealership and are doing what we can to fix this. In the meantime I'm just wondering if anyone else has heard of this happening with the ZF 9HP. I feel like it may be an issue with the dog clutches not engaging properly and the ECU freaking out and not opening the throttle despite user input. I imagine this is likely fixable with a TCU reflash but I'm hoping we don't need to go through the pain of trying to get a new transmission.
We have owned Hondas in the past and had great experiences, but we've been feeling pretty sour about this car and Honda in general now. Had the fuel injector replacement done at 38k which was a hassle since the relevant warranty period had ended 2k miles before then. We've also had odd transmission behavior throughout the entire life of the car. After some particularly unsettling incidents, we took it to the dealer and were told (surprise) it's normal behavior and nothing unusual could be replicated. I'm hoping that this scary problem is something easily fixable.
Tyler