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I have U0100 LEXUS GS 450H 2007y. 2007 usa. I fixing myself.

Customer Question
Hi i have U0100...

Hi i have U0100 LEXUS GS 450H 2007y

Mechanic's Assistant: What year is your GS 450h?

2007 usa

Mechanic's Assistant: Are you fixing your GS 450h yourself? What have you tried so far?

Yes i fixing myself

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

I have photo from my scaner diagnostic

Submitted: 4 months ago.Category: UK Car
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Customer reply replied 4 months ago
i have new baterry 12v (optima)
i drive all day and is ok
on the morning a have U0100 and engine not starter
when i cleaned diagnostic , engine starter and all day is ok
IMG_5996.JPGIMG_5996.JPGIMG_5997-1.JPGIMG_599...JPGIMG_5997.JPGIMG_5997.JPGIMG_5998-1.JPGIMG_599...JPGIMG_5998.JPGIMG_5998.JPGIMG_5999-1.JPGIMG_599...JPGIMG_5999.JPGIMG_5999.JPGIMG_6001.JPGIMG_6001.JPG
Answered in 3 hours by:
1/17/2018
UK Auto 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: UK Car
Satisfied Customers: 5,355
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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UK Auto 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

Click on link to view pdf file for DTC U0100 ( loss of PCM/ECM communication ) we have a can bus issue where the ecm losing connection

what is mileage on it now ? is there any other fault codes then U0100 ?

if we have a loss of communication from it want start for sure, when turn switch off OFF and back on it is resetting the Module , but we need to know which one

Do you have a capable scanner that can read Lexus Modules and Including HV ECU or you have just Basic code reader

How did you retrieve the U0100 using what scanner ?

If you do not mind me asking are you looking for the most possible causes and taking it to a repair shop or you are repairing it yourself and you need step by step instructions
Please Let Me Know
Thank You
Chad Farhat
ASE Certified Technician

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Customer reply replied 4 months ago
hi
i have techstream
142000km
i have fault from air conditioner (B1421 B1423 B1424 ) because is empty and HV GATEWAY U1126
UK Auto Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

U1126 is for Steering angle sensor fault

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Customer reply replied 4 months ago
but light from airbag is flashing (no fauls from airbag) and butons on wheere stering working but not flashing
Customer reply replied 4 months ago
i had B2243 and i change steereing angle and no faul but airbag flashing still have
UK Auto Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

was this car involved in accident and you trying to fix it .and if it has ,what have you replaced in the restrain system components ?

B2243 Trouble shoot and possible causes

click on link to view

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Customer reply replied 4 months ago
i bought with this fauls
i change reel for the steering wheel because was falus reel for the steering wheel is interrupted
now i have only (B1421 B1423 B1424 ) because is empty and HV GATEWAY U1126 lost communication with park assist monitor module and at one week i have u0100 every mornig
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