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Whether I use my iCarsoft IIMB V3.0... or LAUNCH Creader Elite 2.0 Benz readers, the Gateway module that finds 2 STORED codes every time. The codes do not point to any current problem.
I can reliably clear these codes with either reader. But the next time I run diagnostics (with either reader), the same STORED codes are back.
Is there some step I am missing to erase these stored codes completely?
Whether I use my iCarsoft IIMB V3.0... or LAUNCH Creader Elite 2.0 Benz readers, the Gateway module that finds 2 STORED codes every time. The codes do not point to any current problem.
I can reliably clear these codes with either reader. But the next time I run diagnostics (with either reader), the same STORED codes are back.
Is there some step I am missing to erase these stored codes completely?
Erasing code is the last step of a repair and also the first one.
Can you give us a screencap or better the complete pdf "report" to get whole network interactions.
Stored faults are not only historical but also transient codes... they are meaningful.
Become familiar with chassis reboot to sanitize SAM/CGW/ESP pilling up silent network errors.
There is a whole range of system uneasiness that is kept under wrap below the radar. The solderless bottleneck is the purveyor.
The more you peal off the onion, the cleaner it becomes.
I ran a complete "Inspection Report" on March 12th, using the LAUNCH reader. The downloaded "Inspection Report" shows "Normal values" for the Power, Chassis, Safety & Security, Vehicle Body and Infotainment systems, and the "Professional Report" shows all modules to be "Normal." In short, there is nothing abnormal to see in the report worth reporting here.
I will capture a screenshot of the Gateway Module the next time I'm in there.
Would there be any problem doing a chassis reboot (I assume disconnect battery for 20 minutes)?
When you clear the error and read the error code again immediately afterwards and confirm the error has been cleared. That mean your scan is good and can clear code, and sure you're doing right.
And some days after, error code is back, it not current and only stored. That mean your system has an error. I guess that codes are communication or some messenger missing. It usually due to unstable voltage. So live with it because these errors are quite difficult to determine other than replacing good battery.
Baby Launch also can created a false STORED code.
Mine was like that too. Not always, sometime.
It was giving some fault from Front SAM N10/1 , something to do with lights. I forgot the detail.
We can't expect Launch to be as good as Xentry recommended by BenzNinja.
That is why I have now 4 scanners and if important function I only trust the Xentry recommended by BenzNinja because I do not want to brick any module.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
@S-Prihadi makes a great point. As good as LAUNCH Creader or iCarsoft may be, they are $150-$200 scanners (street price) and not $1000 cloned SDS (XENTRY) systems. That said, I have a persistent Electronic Stability code in my 2014 C350 that iCarsoft detects, but not LAUNCH. Looking it up, there is virtually nothing about it other than it can be ignored.
My experience with several scanners is that they differ in the breadth and depth in scanning. I've experienced phantom codes that appear once, but not after being cleared. Some codes only appear after a drive cycle satisfies prerequisite conditions for determining the fault. Other faults are detected at power on.
An example: prior to disabling auto start/stop with a recently acquired scanner, I disabled it by disconnecting the battery sensor. All but one scanner (the one I used to code off ***), never detected any DTCs. These 2 DTCs identified a faulty battery sensor, which being disconnected, was accurate. There was never any CEL, and because these codes were being detected at power up, they could never be cleared. After coding the *** off, I reconnected the sensor, cleared the codes and they now do not appear.
Here is the one module where I have STORED codes... I put the car on a battery tender before running this diagnostic.
Can I clear these by disconnecting the battery for 20 minutes, or what?
Your answer is YES
These faults will clear temporarily.
Exact same pair will come back... "not fixed"
I used to have these exact same two faults regularly.
The common mind share had me thinking this was caused by disconnecting the scanner. Nope!
I dont think so anymore because now the pair is gone.
This condition is a genuine "tip of the Iceberg".
These two faults showing up mean CGW got swamped with disrupted data flow.
I don't EXACTLY know why but have clues...
This quit bugging me when I switched scanner from AUTEL to MS. cReader - I thought: great this works better. It was just a scamner bug like the ghost LIN 70b1 temp sensor.
Now I guess not, you have it on LAUNCH SCAN.
Then I'll conclude it was my CAN-C ISM causing this latency jam that disturbs CGW.
There are too many un-terminated connections pilled up across the gateway that have not expired - That's what rebooting car helps with. It took me over 10 years to understand this bug.
When CGW is upset, ESP is too. I think its the broken ESP traffic that fills up CGW queues.
ie. hance REBOOT EVERY 2 WEEKS. Simply disconnect GND at the strut tower and AUX GND too.
A reliable CAN-C HELPS ECU timings.... here:
Have you noticed fish-bites misfire when scanning engine ON, yes? Can-C HAS PROVEN Impacts ECU TIMINGS
+++ clearing CODE is like clearing RAIN +++
Resetting codes is like windshield wipers during the rain: it's great but does not stop the source.
Last edited by CaliBenzDriver; Mar 19, 2024 at 04:56 PM.
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How do I clear STORED Codes?
