cva

Hello guys, I'm new and would appreciate if you will help me with it -
I can't find the block for AWD system for my lexus RX350 (3th generation from Canada).
I'm looking for a code of this part and place where I can buy it from a crashed car (after a car accident).

heshamos

Hi, Are you looking for the part number of the transfer gear case?
Do you mind sharing a few pictures of the broken part and its location on the vehicle?
I understand that it's an AWD vehicle. Did you at least try to call a dealership for the part number? They should be able to get the right number from your vehicle's S/N.
Let's know how we can help.
Thanks,
Quick Reply

Clutchless

The best source for used Lexus parts is http://www.rancholexusrecycling.com/ followed by eBay. The third way is a call your local auto recycler with a request for this part and if they do not have it, ask if they know who might or if they will contact every other local source to find if one is available. Most are connected and make such requests all the time.

cva

Thank you for answers.

2heshamos, I didn't call to dealership, because of this car was imported to another country..it's a really long story.. and I decided the dialership won't help me.

Actually, I can see on the panel next error: CHECK AWD SYSTEM

My mechanic said that I should bring him block/comp that control awd system. That's why I'm looking for OEM of this block.

2Clutchless will try, but I want t request part using OEM number of this part.

heshamos

Please share the error codes if your mechanic used OBDI scanner and if not, go to another mechanic. I suspect that he's not a specialist.
Also, you can use Toyota dealership (cheaper) than Lexus in general.

The 'check AWD system' message doesn't necessarily indicate that there's a problem with your AWD system but could be a variety of things some of which are minor including a faulty catalytic converter, engine misfire, etc. I'm glad we're hatching this down now!

So, we need error code(s), history of vehicle if known AND any physical symptoms that you hear or feel while driving. The vehicle year, mileage and I'm assuming it's RX350.

Btw, the dealership can still help with a minimal effort on your side. Just give it a try..

Cheers

cva

I do not have any physical symptoms and mechanic have provided me these list of errors:
* C1241
* U0073
* U0129
Yes, this is RX350, 65k miles, 2011 (3rd generation).
Thank you, will call dialer too.

Clutchless

You need a better mechanic.

cva

Why? Are these issues not related to the AWD system?

Clutchless

C1241 = Low positive battery voltage

Code U0073
The computers in modern vehicles (referred to as modules) communicate with one another over a data bus. This bus is called the controller area network (CAN). CAN is a two-wire bus, consisting of CAN High and CAN low. CAN High has a communication rate, or baud rate, of 500k bits/second. CAN low on the other hand, has a communication rate of 125k bits/second. Information is transferred between the two buses by a gateway module.

The modules are connected in parallel with the CAN bus. Data is transmitted between modules sequentially, one bit at a time. This is referred to as serial communication. At each of the bus, there's terminating resistor.

When there’s a communication problem, the system will store a 'U' diagnostic trouble code (DTC). Code U0073 means one or more modules is not able to communicate properly over CAN bus 'A'. Depending on the manufacturer, bus 'A' can refer to either the CAN High or CAN Low bus.

U0073 symptoms

• An illuminated check engine light
• A secondary code specifying a failed module
• Performance problems ranging from a no-start condition to inoperative HVAC system, depending on which module(s) are unable to communicate

Code U0129 = Lost communication with brake system control module and or skid control module etc

I think the common thing with all these are voltage. Low voltage from a bad battery, bad alternator, bad battery cables or ground could be a cause. Also check the ABS Actuator Assembly. See below.
I would first test the alternator and battery and ABS and see what happens.
None of these say anything about replacing your AWD system. Your mechanic is an idiot. What kind of mechanic tells his customer to go find the parts and cannot even properly identify the parts? An incompetent one.
Find a Toyota specialist.

I also found that If in a 2007-2011 Toyota Camry (similar platform, engine and transmission to the RX) and the Instrument Cluster Gauges start to act erratically then you will want to look towards the ABS Actuator Assembly as being the cause.

1) The ABS and Brake lights will come on and then go off.
2) The D (Drive light in the PRNDL area) may go out and come back on.
3) The RPM needle may move up and down fast.
4) The speedometer may not operate and read the miles per hour.
5) the temperature gauge may drop to read Cold and then pop back to normal.
6) You may feel the air conditioning start the get warm (blower keeps working)

If you poll the computers for codes, you may see codes U0073 and/or U0129 stored.

heshamos

I also felt the same about that mechanic who diagnosed the codes once I googled them. I've never seen a mechanic who would jump his gun with the most expensive link in the chain!!

You need to start fresh again. You have the choice of going to a dealership (even a reputable Toyota shop) to make a sound diagnosis. At least you should feel relived now that it's not an apparent mechanical failure.

Let's know how it goes.

Thanks,

Clutchless

It is a major red flag that the thread originator said he does not have any symptoms, just the warning lights. The mechanic is absolutely thinking he can make a new boat down payment off of this repair!
No one on this forum since I have been here, about 6 years, has had an AWD system failure.

cva

C1241- mechanic told me to change the battery, but the issue that's it's a new battery - I left my car in another country and my friend starts the engine once/week (in this way we try to keep car performance) and each time I ask him to go to this mechanic
I wanted to sell this car before leaving but had a lot of issues and this is the last one. This car had a problem with water, truly that it was everywhere.
He did next - scanned all errors and sent me a screen, reset them and they have gone away for a couple of days. Now they came back. And he didn't take money.
I would understand if he had asked to find ABS Actuator Assembly (the water could kill it) but not AWD.

I appreciate your answers guys, thanks again!

Clutchless

New batteries can be defective.

If it was my car and I was in your situation:
Clear the codes and sell it to a used car lot right away. Take their first offer and run!