Dealer says air shock bad - (Update) airline tool & ECU reset

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Link
 
Infinity00 said:
To read the codes before resetting the ECU - jumper the same two pins, 13 and 4 and turn the key on. The “off” light for the suspension height control will begin blinking. If there are no codes it will blink continuously every 0.25sec. When there is a code present it will blink a series of times, then pause for a half second and blink another series of times. Then it will pause for a longer period of time before beginning the sequence again.

count how many times it lit up before the first pause and write down the number, it should be between 1-8 if I remember correctly, 1-9 if I didn’t. Then do the same for the next sequence after the half second pause, again 1-8. For mine I wrote don a 4 then a 1 which is code 41. Now a longer pause happens and the sequence will begin again. If there is another code stored you will get a second set of numbers, mine was 51.

I think if you get a 13 or 14 it’s the height sensors. Mine were related to an open or short on the air suspension relay, 41 (probably when I took it out and turned the key on) and a continuously running compressor, 51 (probably from the leak in the air shock)
Click to expand...
Does anyone know what code 44 is? Or where I can find this information?
 
Lexus doesn't sell a solenoid separate from the compressor. Code 44 is the solenoid shutting off the compressor due to heat or some other load issue. I have heard that the feed and bag lines can get crap in them. Try blowing them out with compressed air. If that doesn't work:

Cheaper replacement: Amazon product ASIN B075R6VHWC
 
regarding tool to remove airline.. ive heard from the grapevine that the plastic locking piece actually serves as a tool... all you got to do is rotate it 90 degrees and reinsert and the locking buts will unlock.

i cant however test this since i dont have air suspension anymore but hopefully someone can try,.
 
vwynn said:
regarding tool to remove airline.. ive heard from the grapevine that the plastic locking piece actually serves as a tool... all you got to do is rotate it 90 degrees and reinsert and the locking buts will unlock.
Click to expand...

Just changed both airbags. The plastic locking piece as a tool worked great on the air spring end of the hose but I was getting a lot of resistance on the tank end so there I just used two small flat screwdrivers. They worked great.
 
Infinity00 said:
It’s fixed! I got the repair guide and was able to read the codes and then reset it. Resetting it allowed the compressor to work correctly again.

To reset the air suspension ecu do this:
Make a jumper wire and jumper the DLC3 connector pin 13 to pin 4. Turn key to on, pump brake 8 times quickly. Turn off key and remove jumper.

Locate pin 1: lower right corner is #1
Counting right to left staying on bottom row count to pin 4 Edit: jump to upper right corner to find pin 9 then staying on top row count to the left until you get to pin 13. Put a jumper wire between those two pins and leave it there. Now turn the key to on (don’t start the car). To reset just push the brake pedal down and release it, 8 times in 5 seconds. The dummy warning lights will begin flashing at a regular interval. At this point turn the key to off and remove the jumper wire. Now your air suspension ecu is reset.
Click to expand...
I'm here only to say that the tip about connecting pins on the OBD2 port was what finally woke up my compressor on my 03GX after I replaced the airbags after visit in a local shop. After 245k miles and unfortunate visit on the lift for transfer case replacement the bags gave up. I bought cheapest thing available on amazon for $81 for two airbags and installed them. Spent another 30 minutes to find a way to pump them.

I also found this video being EXTREMALY helpful with all hoses disconnections.


Thanks again and good luck.
 
You must log in or register to reply here.

Share this page

Back
Top Bottom