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My Lexus 460 won't start. The terminals are okay. I only…

Customer Question
My Lexus 460 won't...

My Lexus 460 won't start

Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded?

The terminals are okay

Mechanic's Assistant: What is the model/year of your Lexus?

I only move the battery out to start my other lexus 350 as the battery for that one was down

Mechanic's Assistant: What year is your Lexus?

2015 lexus 460 suv

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

2015 model

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No , just that it reads steering lock activ

Submitted: 4 months ago.Category: Lexus
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Customer reply replied 4 months ago
i am still waiting for response
Customer reply replied 4 months ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call.
Customer reply replied 4 months ago
Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 3 hours by:
3/8/2018
Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Lexus
Satisfied Customers: 5,626
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic Vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

Hey how are you ,I will Try to Help you with This Issue

the anti theft security system was triggered most likley moving that battery and the system seen no voltage and triggered

we can try resetting manually ,IF ALL WAS WORKING PRIOR TO REMOVING BATTERY IT SHOULD WORK

Master Reset

1-Disconnect Both Battery Cables ,Positive & Negative .
2- Touch Cables With Each Other For 60 Secs ( this will take any residual power in the Harness to Reset the Vehicle Modules )
3- Wait 30 min
4- Close all doors and trunk
5- Reconnect Battery Positive First
6- Use The Key in The Driver Side Door
Lock Cylinder to Lock it & Unlock,IF You have only a Key Fob ,use it to lock and unlock
7- Enter vehicle and Start it .

if THAT DOES NOT WORK THEN You will need a Capable Factory scanner or equivalent to Read the Fault codes in the Modules needed and based on these faults we can pull up a Pin Point Troubleshoot and be Accurate ,If you get the Faults Read ,post them back here for me and I can Help You Further on it & we be Accurate

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Thank You?Chad Farhat?ASE Certified Technician

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Customer reply replied 4 months ago
thanks for get back to me. i am really worried as this is a brand new 2015 Lexus and i have driven it just for two years.Here is the Fault code and error message- B2786 ''No Response from steering lock EUC.what should i do next? i need help urgently
Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

Ok no problem ,I will try ,since you have a fault code now i can help more

Click on link to view the pdf file on the step by step testing for dtc B2786

With that said these had TSB bulletin not a recall, on the wiring harness of the steering wheel lock ecu

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Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

Problem is what ever work on the connector or wiring or the ecu lock itself , after repair you will need a factry scanner to register that ecu back to the car ,so you can finish job yourself with a capable scanner

TSB ,Technical service bulletin, is not a recall so dealer want pay for it

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Customer reply replied 4 months ago
after registering the EUC back to the car , would it affect another euc or any other thing in the car.
Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

no it should not ,if you the capable scanner to do it ,it should be okay,but you have to test u can not assuming ecu is defective

run the steps so we not guessing and throwing parts at it

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Customer reply replied 4 months ago
My suv hasn’t started yet.
Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

For B2786 there is 3 posssible causes ,listed in the file i sent you

Possible causes

1- Steering lock actuator ECU

2- Certification ECU

3-Harness or Connector to ECU

this the test again ,click on link below

http://f01.justanswer.com.s3.amazonaws.com/jhook1398/ddf52620-f6c7-4550-8b00-5b1e9678d758_111.pdf

IF YOU JUTS REPLACED ECU WITH ANY CHECKING AS DESCRIBED IN THE DTC TROUBLESHOOT I SENT THEN YOU GUESSED AT IT AND THAT IS HOW WE END UP THROWING PARTS AT IT

I CAN NOT TELL YOU WHY IT IS NOT STARTED AT THIS TIME , WHAT DID YOU CHECK ? IF ANY ?

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Customer reply replied 4 months ago
I say a deduction of 34dollars on my card and I don’t know why. Pls can someone explain. Is this some kind of fraud
Customer reply replied 4 months ago
I mean I saw not say. Can someone respond. Besides my car is still not working
Lexus Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

I will send it for refund for you

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