realjack

I have a 2010 Lexus GX460 bought in 8/2010. I live in Wisconsin. The vehicle has 49000 miles as of 5/2015.

The vehicle has been running great until the winter of 2013/2014 when the KDSS light starts to flash from time to time. I brought the vehicle to the local auto shop and they ran the computer code and could not come up with anything and told me to come for a diagnosis when the light stays on. The light went off by the spring and summer of 2014. I thought it was due to cold weather.

Of course the problem returned this winter with more frequency and stayed on at the end of winter. I took the vehicle to a Toyota dealer for an inspection. Now the code returned 49611, with possible causes of C1812, C1832, C1851. The technician found that the connector pins on the accumulator assembly has significant rust and corrosions with number 3 pin broken off and stuck within the female connector hole. It all make sense. Bad connection in last winter, finally broken this winter with a steady KDSS light.

I searched forums and info on the internet and found of course I am not alone. Landcruiser use the same pump assembly.

Toyota Landcruiser Lc4 2010 Kdss Message Light - Toyota Landcruiser Club

http://www.toyotaownersclub.com/foru...message-light/

The actual service bulletin board in Russian which you can use google translate:;

http://maxim.int.ru/prado/tsb/%FB%C1...0103T-1212.pdf

http://translate.google.com/translat...df&prev=search

The part involved is the 2010 assembly with P#48860-60030 or P#48006-60030 which have been replace with a new part P#48006-60031. It also make a lot sense that this seemed to happen to a lot of Russian vehicles since the weather is similar.

I do not understand why Lexus did not send me or others a notice to have the part replaced and waited for the problem to occur on my vehicle and then struggle to find what was the problem. Now I am asked by Lexus customer service to go a couple hundred miles to have a Lexus dealer to verify the problem and not knowing whether any of the cost could be covered. I know this is a very expensive job. I will keep you posted about my experience once I make the 400 miles trip.

T4Fun

i have a feeling the rust has caused your issue locking up the KDSS.
I sprayed the entire underneath of mine with fluid film the 1st week i bot it, and no rust at all after first harsh winter. Learned with my first gx that the wrought iron parts have significant corrrosion. You probably can still spray it underneath yours to prevent further
corrosion

realjack

Thanks for the tip but I do not know whether it would have prevented it from happening. Here is why. Water somehow got into the connector and caused corrosion visible on all the pins with one pin broken off first and stuck within the female connector. It may have something to do with the kind of metal they used in the connectors pins.

realjack

The corrosion on the base of the broken pin is very visible on the female connector side around the hole in the first picture. The accumulator part with -60030 number is no longer available. It is replaced with -60031. From what I have learned so far it seems that although it is only the connector that is defective, replacement of the whole accumulator assembly is needed for the remedy, which is a very substantial job.

T4Fun

where is this assembly under vehicle?

realjack

It is on the driver side in the under-body between front and back seat, covered by a metal protector with two 12 mm screw heads. There are four metal tubes going to it, two from front and two from the back.

realjack

this is the assembly with the cover on, which is held by the two 12 mm screw head, Two tubes are visible.

realjack

http://workshop-manuals.com/toyota/4...ion/locations/

T4Fun

ok, ive seen those lines, never looked inside deeper though. thats a lot of rust from the looks of your picture

Chesty

Hi All,

I currently have Loud squeeky and clunk noise coming from my KDSS cylinder everytime i climb a bumb or when the weather is wet.. It gets worse when it rains.. Also the KDSS light is on with an error code C1832. Please help and information would be appreciated.

Lexus GX460 2014

bbqsoup

I had code C1851 (I think most C18XX codes are related to KDSS and shocks) and it was the rear "Stabilizer Shock leaking" and it caused KDSS light to went off. The dealer replaced it under warranty.

You should have them check.

Acrad

yyc

My 2010 was clunking when going over uneven roads and speed bumps. I thought it was bad ball joints. In addition, KDSS would turn on intermittently so I brought it to the dealer to get diagnosed.

Code turn out to be C1851 - low pressure in KDSS. The dealer recommended to bleed the KDSS and I went ahead with it. Got it back yesterday and there's no more clunking and the light has not turned on yet...

However, if the bleed doesn't fix it, then I might need new accumulators.

Chesty

Hello All,

Please has anyone come across the error code C1851 for KDSS, and what was done to resolve it.

THanks.

bbqsoup

My 2010 had that error a while ago
From the work paper, it mentioned "Stabilizer Shock leaking" and it caused KDSS light to went off". I think the dealer may have replaced them under warranty.

You can check with your local dealer and see what they suggest.