13 LX AHC pump problem (2 Viewers)

[Chucky313]

I think my ahc pump is acting up or something, i can hear it but nothing is really happening. I checked the fluid its full and i poured little more just in case and the overflow started to leak, which is fine. Im getting C1763 code, Did anyone had this issue. i just uploaded a video.



ahc pump video

 

[32cls6speedmt]

Make sure you don’t have a leak. Take a look at the link below.

Thread 'LX570 2011 stuck at C1763'

May 3, 2024

Hi,

Lx570 2011
Got 4-whee ahc system check light on at 158k
As i was already planning to change the globes before it appeared, so i though to start it from there.

Order OEM globes (all 4) and OEM AHC fluid.
- Did bleed before changing globes.
- Replaced globes
- Emptied the reservoir and filled with new fluid
- Did bleed again.
- Started the car, same error
- Hooked Techstream and witnessed error code C1763
- Bled again all 5 locations starting from furthest
- Started car - Same error

Now I see that AHC fluid is over flowing from the reservoir. Breather and inlet valve has few drops of...

• muzzam
• 2011 lx570 c1763
• Replies: 16
• Forum: 200-Series Cruisers

 

[Chucky313]

Make sure you don’t have a leak. Take a look at the link below.

Thread 'LX570 2011 stuck at C1763'

May 3, 2024

Hi,

Lx570 2011
Got 4-whee ahc system check light on at 158k
As i was already planning to change the globes before it appeared, so i though to start it from there.

Order OEM globes (all 4) and OEM AHC fluid.
- Did bleed before changing globes.
- Replaced globes
- Emptied the reservoir and filled with new fluid
- Did bleed again.
- Started the car, same error
- Hooked Techstream and witnessed error code C1763
- Bled again all 5 locations starting from furthest
- Started car - Same error

Now I see that AHC fluid is over flowing from the reservoir. Breather and inlet valve has few drops of...

• muzzam
• 2011 lx570 c1763
• Replies: 16
• Forum: 200-Series Cruisers

my friend that works at the lexus dealer just went on vacation, i showed him the video and he claim the pump is fine and it might be air in the system. Im waiting on him to return so he can check it out. I hope its a easy fix and not the pump. If the pump is bad i might as well order the globes and the pump from japan, around $1,200 shipped both the pump and globes.