Builds eatSleepWoof's '14 LX (1 Viewer)

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....holy crap.

Do you have a warranty? Who's covering the cost?
 
....holy crap.

Do you have a warranty? Who's covering the cost?

Dealer is covering the costs (at least, at no point did they even hint at having me pay for anything, and in this case I wouldn't). This was caused by them, and they've said as much. The issue/error occurred on the drive home from service, and the first thing I did was call the service rep right from the car. I'd imagine error codes are also time-stamped, so they know it wasn't an issue prior to me bringing the LX in for service.

I also had about a week of powertrain warranty left when I brought the LX to them, so they might be getting some warranty pay-outs from Lexus for the work. But I've really no idea.
 
FWIW, something similar(ish) happened with mine. The tech's were messing with the height settings to get the vehicle level due to a 1.5 difference between the driver and passenger side.

My story went something like this:

They couldn't figure out why the truck would stay in low after trying to seesaw into Normal. Since the truck couldn't figure out how to get into a level position, it dropped back into low. They went out into the lot and took an ECU off another LX. Bam, everything was back up and running. They ordered a new ECU and "fixed" the truck.

Unfortunately, to me it seems they didn't fully understand the readings in Techstream and were manipulating random settings for the AHC. They didn't write down the previous settings nor did they write down the settings of the one they swapped from the lot. Either way, when they popped a new ECU in it fixed the seesaw effect as well as got the truck to about .25/.5 inches side-to-side. Go figure.
 
FWIW, something similar(ish) happened with mine. The tech's were messing with the height settings to get the vehicle level due to a 1.5 difference between the driver and passenger side.

My story went something like this:

They couldn't figure out why the truck would stay in low after trying to seesaw into Normal. Since the truck couldn't figure out how to get into a level position, it dropped back into low. They went out into the lot and took an ECU off another LX. Bam, everything was back up and running. They ordered a new ECU and "fixed" the truck.

Unfortunately, to me it seems they didn't fully understand the readings in Techstream and were manipulating random settings for the AHC. They didn't write down the previous settings nor did they write down the settings of the one they swapped from the lot. Either way, when they popped a new ECU in it fixed the seesaw effect as well as got the truck to about .25/.5 inches side-to-side. Go figure.

Interesting. One of the things I asked them to initially look at was potential height difference between passenger and driver sides. They said it was normal difference due to gas tank.
 
Interesting. One of the things I asked them to initially look at was potential height difference between passenger and driver sides. They said it was normal difference due to gas tank.
There's a data point
 
Interesting. One of the things I asked them to initially look at was potential height difference between passenger and driver sides. They said it was normal difference due to gas tank.

Point to clarify:
I brought it in working fine, just the "lean" was the issue. The rest was after they played with the settings.
 
With my side-to-side height difference I didn't take any measurements prior to bringing it in, and asking them to look into it. Not entirely sure my driveway is level, and not entirely sure I wasn't imagining things, so I asked them to just have a peek. They said there was a bit of a difference, but it was due to the gas tank, and my dog crate's weight (on the "lower" side). Reasonable explanation.

I just sent my service rep @CLHickman's feedback, too.
 
Yeah ahc doesn't do spring/weight based lean/compression. It has sensors and increases pressure on each corner until the sensor says stop. I had a low corner and just adjusted the sensor until it was where I wanted it
 
How easy is it to replace the ecu? Hope it works out for you.

No idea. I'd imagine it's a fairly simple process.

Latest from the dealer:

"I am hoping to have the donor vehicle as early as tomorrow morning so we can continue the diagnosis. If your ECU is found to be faulty we would have to order one from the warehouse in California as the Western Canada warehouse is showing no stock. This is common for parts that generally don’t fail. Most of the time it isn’t an actual fault with the ECU but we won’t know for sure until we get the donor. We are hoping to have this resolved and have your vehicle back to you before the weekend."

So, nothing new, and no concrete promises.
 
I’m running into the same issue as I’ve just replaced both shocks. Error code and won’t go out of low. I resolved the problem by either (a) absolutely random clearing the code and restarting multiple times or; (b) ....

1. Turn on car. While idling, connect techstream
2. Clear DTC (abnormal pump oil pressure) C1763
3. In the test section, cycle a shock up and down. Since I replaced the rear I cycled the front. Until I actually forced it to cycle the front the pump would not come on.

that fixed it for me, was able to do a full flush and system is perfect. Might help you???
 
I’m running into the same issue as I’ve just replaced both shocks. Error code and won’t go out of low. I resolved the problem by either (a) absolutely random clearing the code and restarting multiple times or; (b) ....

1. Turn on car. While idling, connect techstream
2. Clear DTC (abnormal pump oil pressure) C1763
3. In the test section, cycle a shock up and down. Since I replaced the rear I cycled the front. Until I actually forced it to cycle the front the pump would not come on.

that fixed it for me, was able to do a full flush and system is perfect. Might help you???

Thank you, will pass this on to the dealer!
 
The dealer got the donor vehicle for EUC analysis on Wednesday, and has been working on it since. Just got this update:

"So as it sits your ecu is good. The reason the system doesn’t seem to be responding and lifting correctly is that the new pump Lexus sent us has a malfunction. We reinstalled your old pump and it is working but not generating enough pressure to lift the vehicle correctly and that is causing a time out in the ecu. So at this time we are ordering another pump from Lexus and returning the original one we ordered for warranty because it is faulty. Vehicle height system is still not functioning but at least we know why now thanks to the all the hard work of the engineers and technician. This whole situation has been very strange, out of character for the vehicle, and is a first for us. We are expecting the new pump will arrive Tuesday and have this ordeal put to bed."

Sounds like they're pretty confident in the pump being the culprit. Strange that Lexus sent a defective model. Fingers crossed for a final resolution on Tuesday.
 
The dealer got the donor vehicle for EUC analysis on Wednesday, and has been working on it since. Just got this update:

"So as it sits your ecu is good. The reason the system doesn’t seem to be responding and lifting correctly is that the new pump Lexus sent us has a malfunction. We reinstalled your old pump and it is working but not generating enough pressure to lift the vehicle correctly and that is causing a time out in the ecu. So at this time we are ordering another pump from Lexus and returning the original one we ordered for warranty because it is faulty. Vehicle height system is still not functioning but at least we know why now thanks to the all the hard work of the engineers and technician. This whole situation has been very strange, out of character for the vehicle, and is a first for us. We are expecting the new pump will arrive Tuesday and have this ordeal put to bed."

Sounds like they're pretty confident in the pump being the culprit. Strange that Lexus sent a defective model. Fingers crossed for a final resolution on Tuesday.
What are the odds!?

Hoping that this 2nd new pump takes care of it.

Why didn't they install the pump off the donor to get you on the road sooner?
 
hate to be so skeptical, but this sounds nuts - swapping out a pump is no easy task and requires a full flush. It also sucks that you've had to give so much information to the dealer.
I hope they're actually doing all this work and not just buying time. Once this is all fixed, I would love to see a sample of your fluid.
 
What are the odds!?

When my dog got spayed, she developed urinary incontinence. The vet told me it only happens in 8% of the cases.

After I broke my knee this past December, I ended up with huge range of motion issues (still fighting them). The doc told me it only happens in 4% of the cases.

Whatever the odds are of getting a faulty AHC pump from Lexus... I'm not the least bit surprised that I got the short end of the stick.

If only this "luck" also worked for lottery tickets!

Hoping that this 2nd new pump takes care of it.

Why didn't they install the pump off the donor to get you on the road sooner?

I suspect that the donor vehicle is for reference only, not for "parts use," so to speak. I've ran into this issue before and dealers generally don't want to take a part off one vehicle and put it on another. I've no idea what mileage/condition the donor vehicle is, so at this point I'd rather get a new pump.

hate to be so skeptical, but this sounds nuts - swapping out a pump is no easy task and requires a full flush. It also sucks that you've had to give so much information to the dealer.
I hope they're actually doing all this work and not just buying time. Once this is all fixed, I would love to see a sample of your fluid.

From a buddy of mine (he's an engineer, builds roads):

"I bet when they flush the line they blew a bunch of sh1t into the pump. Sounds like an issue we had on our hydraulic pumps all the time. The valving on them is very tiny and then work under high pressure so it doesn't take much to gum them up."

Seems like a reasonable theory to me.

I don't think it's a stall for time. At least I hope not. I'm still exchanging emails w/ the dealer and they're sounding very confident in getting the LX back to me on Tuesday; even asked if I'd be okay with them detailing it before bringing it back.
 
When my dog got spayed, she developed urinary incontinence. The vet told me it only happens in 8% of the cases.

After I broke my knee this past December, I ended up with huge range of motion issues (still fighting them). The doc told me it only happens in 4% of the cases.

Whatever the odds are of getting a faulty AHC pump from Lexus... I'm not the least bit surprised that I got the short end of the stick.

If only this "luck" also worked for lottery tickets!



I suspect that the donor vehicle is for reference only, not for "parts use," so to speak. I've ran into this issue before and dealers generally don't want to take a part off one vehicle and put it on another. I've no idea what mileage/condition the donor vehicle is, so at this point I'd rather get a new pump.



From a buddy of mine (he's an engineer, builds roads):

"I bet when they flush the line they blew a bunch of sh1t into the pump. Sounds like an issue we had on our hydraulic pumps all the time. The valving on them is very tiny and then work under high pressure so it doesn't take much to gum them up."

Seems like a reasonable theory to me.

I don't think it's a stall for time. At least I hope not. I'm still exchanging emails w/ the dealer and they're sounding very confident in getting the LX back to me on Tuesday; even asked if I'd be okay with them detailing it before bringing it back.

Ah man I feel for you! It's good to read Lexus appears committed to solving this. Thank you for documenting this experience as it will surely help others encountering similar issues.
 
The sh!t-show circus continues...

Advisor emailed me to share more of their good efforts, including taking the LX to another shop in town, ran by their ex master-tech that is apparently a "LX genius," to no avail. Told me the AHC pump they were expecting to receive today was shipped to another dealership in western Canada, and that the only other option would be a pump coming out of California, which they are "hoping to see by the end of this week." That means best-case I get my LX back in ANOTHER week (we're already three weeks into this fiasco).

My patience has ran its course.

Called the advisor and (politely, but firmly) ripped into him for two minutes straight. Told them to disassemble the brand-new LX they have on the dealership floor and to put the parts into mine. Waiting to hear back after he talks with the service manager.
 

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