Reply With QuoteDry joint - heat with hot air and will work for some time
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Thread: W220 eis mcu2 problem
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25th May, 2020, 10:22 PM #1DK Veteran
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W220 eis mcu2 problem
Hello Guys, W220
2155450008 eis 2x 1d69j inside.
Remote ok, ign Comes on.
Not start car.
New key, that i created did not turn ign.
Needed tot activated new key first, then ign on, not start.
Star diagnostic: no respons mcu2.
(Swapped it with a secondhand eis, star diagnostic: mcu2 fine?)
I opened eis, looks fine.
Any common problems with these?
Greetings Rob
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25th May, 2020, 11:00 PM #2DK Veteran
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The Following User Says Thank You to Manta1600 For This Useful Post:
rob h (26th May, 2020)
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25th May, 2020, 11:53 PM #3DK Veteran
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Apply some flux with brush and hot air that is better.
Be polite. No Thanks + Rep, no HELP!!! Slava Ukcraine. Dead Putler civilians's killers!!!
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rob h (26th May, 2020)
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26th May, 2020, 03:33 PM #4DK Veteran
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So a overall hot air resoldering, or just around out the mcu2?
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26th May, 2020, 03:53 PM #5DK Veteran
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No start means not cranking or Not cranking?
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26th May, 2020, 08:11 PM #6DK Veteran
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Not cranking,
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26th May, 2020, 09:46 PM #7DK Veteran
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Around MCU is enough. I don't remember if 220 has ribbon cable like as 210.
Originally Posted by rob h
If there are ribbon cable, rosolder with iron tip.Be polite. No Thanks + Rep, no HELP!!! Slava Ukcraine. Dead Putler civilians's killers!!!
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The Following User Says Thank You to lion0304 For This Useful Post:
rob h (26th May, 2020)
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27th May, 2020, 02:13 PM #8DK Veteran
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Had one of those give me no end of trouble, where it wouldn't crank, even though everything matched in the DAS modules, only to finally realize that a resistor close to one of the mcus was missing. Also inspect the flex pcb connections, close to the mcu.
<---- Coin of the Realm.
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rob h (27th May, 2020)
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27th May, 2020, 04:17 PM #9DK Veteran
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You also could have other problems then EZS, like bad Starter, no signal to starter.
It will be good to try to start direct at starter and see what happens.
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rob h (27th May, 2020)
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27th May, 2020, 10:55 PM #10DK Veteran
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Inspected ezs again, no visual problems or pieces missing.
I warmed up the mcu s in stages,
Pressed the components and ribbon
Diagnostic, no changes, and still no crank.
Programmed a different ezs, and car is fine now. So the car is fine itself.
So i am nothing yet giving up, on trying to find the exact problem with the org eis.
Did not resoldered anything yet, will see what owner wants to do with this car.
I want to spend some more time, with the old eis, and learn from it.
Thank you guys,
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