Tee

You can get the info from these two links for future TSB's for our LS & all vehicles.

http://www.edmunds.com/maintenance/select.html

http://www.aboutautomobile.com/TSB

Vpanin

Thanks Tee!

GS4_Fiend

iTrader: (22)

That's quite a bit of recalls. LOL. My GS430 has a delay problem too. During low speeds like 25mph and I stomp it, it would hesistate then pick up. Is it fixable?

Tee

NP!


Click here: http://www.edmunds.com/maintenance/r...b&serviceType=

Number two might be your issue.

2003 Lexus GS 430 4dr Sedan (4.3L 8cyl 5A)

Vehicle: 2,003 Lexus GS 430
Summary:
SPECIAL SERVICE CAMPAIGN 3LF TO INSPECT AND/OR REPLACE THE THROTTLE BODY ASSEMBLY. AN ELECTRICAL CONTACT IN THE THROTTLE BODY MOTOR MAY MALFUNCTION CAUSING THE MALFUNCTION INDICATOR LIGHT (MIL) TO ILLUMINATE ON THE DASH AND THE ENGINE CONT ( NHTSA ITEM NUMBER - 10003487 )

From the other site: http://www.aboutautomobile.com/TSB/2003/Lexus/GS430

GS4_Fiend

iTrader: (22)

I don't have that problem though. My CEL doesn't come on runsfine too. Just when accelerting hard at 25mph it just lags.

Yaff

My 2004 got the transmission reprogrammed yesterday.
Shifting is much smoother now. I also noticed a significant higher rpm before shifting under hard acceleration while in “normal shifting mode”.

For my fellow Canadians, I learned that our Lexus is under another TCB numbering scheme. It is not TC006-04 in Canada, the service tech showed it to me quickly but I didn’t took the time to mark it down.

He searched his database with “slow speed shifting problems” and found it.

At first I was told they will charge me for the update. Than told me it was covered and just handed out my key without any printed invoice or service receipt.

Tee

If any 04 owners have not had the tranny update done, I highly recommend that you do! I had more driving time and you can tell the difference before the update & after.

Vpanin

So my dealer told me that my car is up to date with the calibration updates. He said that I am not in need of this update. Maybe its because its an 05 and the TSB ( TC006-04) was issued in 04 and all of you guys seem to have 04 models. Maybe that update was already taken care of by the time my car was made. But!!! I still have this hesitation problem. The dealer says its how the transmission's learning mechanism was designed and at this point he has nothing that he can do for me......Except telling me that I need to change my brakes, tires and cabin filter!! I said no thanks. They guy Who was the shop foreman was attempting to make me drop 2 grand at that place....haha.....Im gonna do the break pads myself in about 3k because i know i still have plenty(about 4-5mm) and the tires are perfectly good till next winter ..........so I payed my 50$ for my oil change and went home. I guess im just gonna have to live with the way this 6 speed is

danxp

tried to get the tranny tsb update done also... they said they couldn't find anything like that on their system... i'm assuming it's because of it's the 2005 and not 2004...

got the fuel tank tsb done, so we'll see if that's been fixed...

i too was told i needed new brakes too...

AlexusAnja

Which NJ dealership did you go to?

Maybe they're just being overly cautious, but I'd say about 60% of the time I visit the dealer my brakes are "in need of changing soon" even though I check myself and know they probably are not even 1/2 way through yet.

danxp

lexus of englewood... beautiful service center... didn't have to pay anything for the tsb...

although they denied fixing a couple of issues that they claim wasn't an issue... no biggie...

AlexusAnja

Just got the TSB for transmission done and it's NIGHT and DAY the difference. Just pulling out and turning right from the dealership I could feel it more responsive. Where it use to hesitate just slightly to want to move, now it zips off. Not Corvette fast, but much faster without the hesitation. I tried it a few times on the way home and definitely the shift points have changed slightly. Where the transmission use to almost go from 1st to 4th gear before even 30 mph, now it's just hanging in a little longer. I wonder if it's perhaps reprogrammed to a "sport" mode of sorts and the SPORT mode of the LS is now even sportier. I have not checked yet... but I'm not holding my breath and the LS will be sporty.

The reprogramming was covered under some federal EPA emissions thing that the service writer was telling me, so it ended up being N/C for me. My LS is a 2004. I went in for a headlight adjustment too and it was also N/C. I've been going to this dealer with my RX since we got it, so I guess keeping a relationship/history with a dealership does help when it comes to minor items/adjustments like this.

I will have to see if my mpg drop because of this programming as some have noted. The service writer did ask me an "are you sure you want to do this..." question. Concern is that once the TSB is done, it's done. You can't go back to the old settings because they're setting new shift points "burned" into the ECM and through the whole 6 gears, not just the lower gears. I asked what are the drawbacks? He said that it COULD shift harder and some drivers feel a rougher downshift. I told him, beats having what I consider a "dangerous" situation where the car hesitates when you don't want it to.

Anyway, it shifts fine for me. No rough up or down the gears. I'm very satisfied, thus far. If my mpg falls to 14 mpg, then I might have to reconsider my decision...

Lust4Lexus

I too have an 05, but I also had the hesitation issue. My dealer said he "flashed it anyway" Whatever he did do to the tranny it certaintly worked bc my car is a different beast now

Viper6

I see the list of TSB's by vehicle year at Edmunds. but it is only the summary. Where can we get the full detail TSB for review... you really need to read that in order to determine if the symptoms are what you are experiencing.

See example in this thread for the tranny fluid TSB.

https://www.clublexus.com/forums/ls4...intenance.html

Maybe we should start a repository of these in Maintenance? Post what you have?

I'm interested in the detail TSB for the slow speed transmission shifting issue...

JimsGX

Here's the full TSB for the Tranny Issue...

ECM CALIBRATION: SHIFTING ENHANCEMENT
TECHNICAL SERVICE BULLETIN
Reference Number(s): TC006-04, Date of Issue: December 6, 2004
LEXUS: 2004 - 2005 LS 430
SECTION: TRANSMISSION & CLUTCH
INTRODUCTION
To enhance low speed ATM shifting, the Engine Control Module or ECM (SAE term: Powertrain Control Module/PCM) calibration has been updated.
APPLICABLE VEHICLES
• 2004 model year LS 430 vehicles.
• 2005 model year LS 430 vehicles produced BEFORE the Production Change Effective VIN shown below.
PRODUCTION CHANGE INFORMATION
PRODUCTION CHANGE INFORMATION
Model Production Change Effective VIN
2005 LS 430 JTHBN36F*5005700
CALIBRATION IDENTIFICATION INFORMATION
CALIBRATION IDENTIFICATION INFORMATION
Model Year Main/Sub ECM (PCM) Previous Calibration ID New Calibration ID
2004 Main 35013000 35013300
2004 Main 35013100 35013300
2004 Main 35013200 35013300
2004 Sub 55013000 55021100
2004 Sub 55013100 55021100
2005 Sub 55021000 55021100
WARRANTY INFORMATION
WARRANTY INFORMATION
OP Code Description Time OFP T1 T2
TC4006 Recalibrate ECM Engine 1.3 89661-50690 87 99
TC4006 Recalibrate ECM Engine 1.3 89661-50691 87 99
TC4006 Recalibrate ECM Engine 1.3 89661-50692 87 99
TC4006 Recalibrate ECM Engine 1.3 89661-50780 87 99
NOTE: Applicable Warranty*:
This repair is covered under the Lexus Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
PARTS INFORMATION
PARTS INFORMATION
Model Year Previous Part Number Current Part Number Part Name Qty
2004 89661-50690 N/A Computer, Engine Control 1
2004 89661-50691 N/A Computer, Engine Control 1
2004 89661-50692 N/A Computer, Engine Control 1
2005 89661-50780 89661-50781 Computer, Engine Control 1
PARTS INFORMATION
Previous Part Number Current Part Number Part Name Qty
N/A 00451-00001-LBL Authorized Modification Labels 1
NOTE: Authorized Modification Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through Dealer Daily or by calling the MDC.
REQUIRED SSTS


Fig. 1: Required Special Service Tools
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NOTE: Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards or other SSTs may be ordered by calling SPX/OTC.
REPAIR PROCEDURE
1. Check for the Authorized Modification Label affixed to the vehicle in the location shown in Fig. 2 . Confirm that the ECM (PCM) calibration has been updated. If not the latest ECM (PCM) calibration - go to step 2.


Fig. 2: Authorized Modifications Label
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Connect the Diagnostic Tester to the vehicle and select "CURRENT ECU CAL" from the "ECU REPROGRAM MAIN MENU." Determine the vehicle's current ECU calibration (see Fig. 3 ).
• The sample screen prints seen below are the 12.01a software version, and may differ from subsequent software versions.


Fig. 3: Determining Current ECU Calibration
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NOTE: • If Calibration ID matches "Previous Calibration ID" as shown in "Calibration Identification Chart" above, proceed with flash reprogramming.
• If Calibration ID matches "New Calibration ID" as shown in "Calibration Identification Chart", this vehicle has already been reprogrammed.
3. If ECU calibration ID is not the same as the "New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).
FLASH REPROGRAM ECM
CAUTION: When reprogramming the LS 430, 12.01a production version or later MUST be used. Using any previous versions of software for reprogramming may result in IRREPARABLE DAMAGE to the ECU!
NOTE: • If the "Check Engine" light is ON when ignition is turned back on to begin the reprogramming process, a scan tool cable problem exists. Refer to TSIB No. SS003-01 , "ECU Flash Reprogramming Error Message ."
• When reprogramming the LS 430 for this issue, calibration files for 2004 and 2005 model year cannot exist on the same Diagnostic Tester Program Card.
If necessary, delete previous calibrations from the Diagnostic Tester Program Card before downloading the new calibration file.
• With this calibration update, 2004 model year vehicles are updated to 2005 model year logic. When diagnosing powertrain-related M.I.L. "ON" or performance issues, refer to the 2005 LS 430 Repair Manual for both 2004 and 2005 model year vehicles.
• 2004 model year vehicles require VIN registration following reprogramming to prevent M.I.L. "ON" (P0630).
1. Disconnect the radiator fan connectors, and connect a battery charger to the vehicle's battery. This will avoid voltage variations that can permanently damage the ECM (PCM) during the reprogramming process.
2. Follow the procedures outlined in TSIB No. SS001-01 , "ECU Flash Reprogramming Process ," and flash the ECM (PCM) with new calibration file update.
3. Reconnect the radiator fan connectors, and disconnect the battery charger.
4. Enter the required information on the Authorized Modifications label and affix it to the vehicle at the location shown in Fig. 2 . The Authorized Modifications label is available through the MDC, P/N 00451-00001-LBL.
5. Enter VIN of vehicle in ECM memory. Refer to procedures outlined in TSIB No. EG012-04 , "Entering VIN During ECM (PCM) Replacement and/or DTC P0630 ."
6. Start the engine and warm it up to normal operating temperatures before test-driving.
7. Perform a thorough test drive with several accelerations from a stop with "light throttle" application until proper transmission shifting is verified.