99¢ Resistor to reset all codes?
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
99¢ Resistor to reset all codes?
Can't stand this guy's voice and flailing arms, but this trick to reset codes is interesting... Has anyone heard of this?
Last edited by DFWdude; Aug 12, 2022 at 08:25 PM.
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Yes, I am aware of his dislike of Mercedes-Benz, BMW, Korean cars, etc. Actually, any car not made in America... which is easy since almost no cars are made in America anymore.
But... Since a good number of threads here deal with clearing codes, I am interested in views regarding his suggestion...
But... Since a good number of threads here deal with clearing codes, I am interested in views regarding his suggestion...
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
OK, if it makes it less painful to maybe learn something new, skip ahead to the 5:20 mark and try to suffer through the following minute only
I couldn't give a crap about Scotty Kilmer. I'm asking about a simple gadget and procedure to clear codes. Please consider the message, not the messenger.
I couldn't give a crap about Scotty Kilmer. I'm asking about a simple gadget and procedure to clear codes. Please consider the message, not the messenger.
Last edited by DFWdude; Aug 13, 2022 at 12:03 PM.
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
It seems that we share a common dislike for SK ridiculous click-bait. His scripted content is often moronic and insulting to fair minded people.
Try watching "Diagnose Dan" channel: he is both funny and extremely smart.
In the old days you could get dashboard lights to blink codes for engine, tranny, abs... simply by using a paper-clip strap.
With OBD2, we don't have to keep struggling with the basics. It's easy to access the results of software sel-tests.
The real problems left are those unidentified by codes, sometimes hiden in data or found with time sucking troubleshooting.
Try watching "Diagnose Dan" channel: he is both funny and extremely smart.
In the old days you could get dashboard lights to blink codes for engine, tranny, abs... simply by using a paper-clip strap.
With OBD2, we don't have to keep struggling with the basics. It's easy to access the results of software sel-tests.
The real problems left are those unidentified by codes, sometimes hiden in data or found with time sucking troubleshooting.
Last edited by CaliBenzDriver; Aug 13, 2022 at 02:25 PM.
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From: New Orleans Area
2015 E400 Sedan
Most people just connect + & - and be done with it without worry of the things he worries about - what he suggests would be safer to computers.
But I would prefer using a code reader that can reset since maybe you only need to reset one computer for say Command system or Reset the check engine light or tire sensor thingy.
Also I wonder if these newer cars use some sort of EPROM (FLASH Memory) now to remember things in lieu of always needing power of some sort above 9vdc be it car battery or back up battery or capaciters on boards.
That guy takes a long time to get his point across - 10 mins for a 45 second demo
But I would prefer using a code reader that can reset since maybe you only need to reset one computer for say Command system or Reset the check engine light or tire sensor thingy.
Also I wonder if these newer cars use some sort of EPROM (FLASH Memory) now to remember things in lieu of always needing power of some sort above 9vdc be it car battery or back up battery or capaciters on boards.
That guy takes a long time to get his point across - 10 mins for a 45 second demo
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
Thread Starter
MBWorld Fanatic!
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
It the resistor works, it is certainly much more preferable to blowing a single (expensive) module on any MB, yes?
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From: New Orleans Area
2015 E400 Sedan
blanket statement is it safe on Mercedes?
Well maybe SURE.. but remember we have that aux battery in trunk... so it has to be disconnected- -and whereelse do they have em hiding small power sources as emergency memory backup?
I dunno as each model/year etc is different. so to quote a crap harid dryer cord label - use ate your own risk and not in a shower.
Personally I just use my BD2 hand held as most "Car learned" traits are with engine and tranny...
I am not really worried about what my AC has learned I prefer.
Well maybe SURE.. but remember we have that aux battery in trunk... so it has to be disconnected- -and whereelse do they have em hiding small power sources as emergency memory backup?
I dunno as each model/year etc is different. so to quote a crap harid dryer cord label - use ate your own risk and not in a shower.
Personally I just use my BD2 hand held as most "Car learned" traits are with engine and tranny...
I am not really worried about what my AC has learned I prefer.
Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
battery disconnect...
You want to know if shunting battery leads is a safe practice for on-board electronics:
The short answer is "maybe"
The honest answer is "why chance it"
I've been up close with most modules in this W212 car and personally I do not short my leads during reboots.
I let the power stay out for 5 to 15mn, it is plenty good enough. If you are pressed for time, deal with something else more urgent. There are no benefit in shorting batt leads, why do it?
MAIN + AUX:
Disconnecting AUX or it's new troublesome incarnation with the 4x 1Farad super-caps is a must. When MAIN is out AUX powers a backup path through R-SAM
Why disconnect:
It's an excellent practice to have power Off on garaged vehicles not driven often. Oxidation doesn't get to bridge ultra narrow circuit traces.
The short answer is "maybe"
The honest answer is "why chance it"
I've been up close with most modules in this W212 car and personally I do not short my leads during reboots.
I let the power stay out for 5 to 15mn, it is plenty good enough. If you are pressed for time, deal with something else more urgent. There are no benefit in shorting batt leads, why do it?
MAIN + AUX:
Disconnecting AUX or it's new troublesome incarnation with the 4x 1Farad super-caps is a must. When MAIN is out AUX powers a backup path through R-SAM
- Disconnect: AUX > MAIN
- Reconnect: MAIN > AUX
Why disconnect:
- To isolate batts from vampire discharge
- To Reboot both F/R-SAM's
- To dry modules in case soaked by leaks
It's an excellent practice to have power Off on garaged vehicles not driven often. Oxidation doesn't get to bridge ultra narrow circuit traces.
Last edited by CaliBenzDriver; Aug 17, 2022 at 12:49 PM.
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
95% of those cheap ELM327 are quite broken clones, its hard to find a 'good' one that can properly read the canbus etc. Apps like Torque can only handle generic ODBC stuff and not all the myriads of Mercedes specific subsystems, never mind tasks like coding... For that you need Xentry/Vediamo. If you have a Ford, there's a great app, FORSCAN Lite, that works with a /good/ ELM327 and reads all the Ford specific stuff, but noone has done this for Mercedes.
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S212
yes obviously cheap elm327 is only for standard obd2 codes, wasn't recommending it as an alternative to proper diagnostic systems, but it still better than a resistor or a paperclip imho,
I use launch to read what i need on mb, if there is something it doesnt read its probably above my level anyway.
I use launch to read what i need on mb, if there is something it doesnt read its probably above my level anyway.
