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Eric
Eric, Automotive Repair Shop Manager
Category: Lexus
Satisfied Customers: 31342
Experience:  20+ yrs. experience as repair shop manager and technician.
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I have a 2003 Lexus GS300. The problem I am having is that

Customer Question

Hello,
I have a 2003 Lexus GS300. The problem I am having is that whenever I try and use the keyless remote, it unlocks the doors except the drivers side doesn't, sometimes it does but then it immediately locks again. I replaced the drivers side lock actuator but I am still having the same problem.
Please help.
Thanks.
Submitted: 1 year ago.
Category: Lexus
Expert:  Eric replied 1 year ago.

HI,

I am sorry that you have not been helped yet. I just came online and saw your question

Does the inside lock switch work normally- is this just restricted to the keyless entry? If so, this could be in the keyless entry control module

I need to get the last 8 digits of the vin number to pull up all the related wiring schematics.

Customer: replied 1 year ago.
Hello,Thanks for getting back to me... Yes, the inside switch does work normally... and yes it is restricted to the keyless entry, I think... the last numbers of the vin is###-##-####..
Expert:  Eric replied 1 year ago.

HI,

Ok, there are 3 posssible causes - body ecu 1, body ecu 2, or the keyless entry control module. Unfortunately this will need a shop to diagnose as it 100% REQUIRES the use of a factory level scan tool to diagnose which of the 3 is responsible for failure of the driver side door lock circuit in the keyless entry system

Customer: replied 1 year ago.
the standard obd scanner wouldn't work? Also since there is no Lexus dealer here would a Toyota dealer be able to do it if I need a factory scan?
Expert:  Eric replied 1 year ago.

HI,

If you have a high end one like a Snap-on Solus, it will work, but your run of the mill ones that only retrieve codes and read live data wont.

Most general repair shops have a high end scan tool that can do this, so you dont have to take to a dealer, but if none of your local ones do, then a toyota dealer is fine

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Expert:  Eric replied 1 year ago.

I noticed we have not yet resolved your concern you asked about. I would sure appreciate it if you would reply so I can offer my skills and knowledge and repair guide access to help as best I can.

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