New Fix For Shifting Concern On New Es300

[JPI]

Lexus just released a new software for your ES300. This supposed to fix all your shifting concern. TSB #TC004-03. Please contact your lexus dealer. They should get the software within next week. This is good news for the ES300 owners. Your wait is over(I HOPE) :P

JPI

[amf1932]

I spoke to Lexus Corporation this morning to verify this service bulletin(TSB-TC004-03). They were very aware of it. I than called my local Lexus dealer who also knew about it and I have an appointment tomorrow morning to have this updated ECM software installed. Great!!! :D

[steviej]

I'm still waiting to here back. But if y'all know, then I should too.

oh happy day!

oops I forgot, I don't drink.

Hey moderators, can we get some smilies that are dancing?

steviej

[ticman]

AMF,

How about letting us know how it goes with the new software?

Thanks,

Mike

[JPI]

We tested the new software today. And it was a big improvment. Thumbs up to lexus engineers.

JPI

[steviej]

:(

I went by my dealership today after hearing the news.

I have to say I am a bit discouraged. The service manager, whom I trust very much, said he does not want to put the fix in my car.

He explained that he did get the fix and they tried it on several cars on the lot that demonstrated the so called problem.

Basically he said the fix makes the tranny act like a cheap car. The shifts are not smooth and quiet. The tranny supposedly is still searching for gears and the driver doesn't really know what gear he is in. I did not drive any "fixed" ES but I will trust him.

I suggest to anyone that goes for the fix, ask to test drive the car after the ECU is updated. If you do not like the fix, go back to your old ECU. Tell the dealership to contact Lexus and tell them you are not pleased with the fix.

If, however, you are impressed with the fix, please post immediately with your take on the new shift logic. I will have to rethink what my service manager advised.

The ES world eagerly awaits user opinions.

steviej

[SW03ES]

Heh, thats discouraging...

We'll see what we can do about dancing smilies ;)

[Concord]

Hey JPI,

What exactly did you notice with the new software?

John

[amf1932]

I will definitely post back after the upgraded ECM is installed tomorrow morning. The weather forecast is thunder showers for tomorrow so I'll test it the best I can under these conditons. The service manager told me that the labor to do this is about 1 1/2 hours. I was surprised that it would take that much time. Does anyone know where this ECM is located in the car?