w211 battery drain, dead, electrical problem "fuse 8" issues DealMaxMotors
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- Опубликовано: 20 мар 2023
- I left the drain alone cut it by half at .18 - .25 AMP We will se if it is good enough for this customer. he has 2x w211 here with me. Same issue. Make sure to replace the clips going around the trunk area they leak water into trunk. Rubber on them goes bad.
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since I changed the power supply of the radio/media station, with fuse 8 and disconnected the electrical controls of the front saws, I no longer have any problems with battery discharge for a week... to know all the same that these models have servers on all floors and still consume electrical energy even when idle... the ideal is to have a mini charger / maintenance that you can put on from time to time if you are not using not every day of his car... Thank you very much for this video at the time which helped me a lot for an E 200 from 2005 elegance... Best regards
Hi there - it is most likely to be your alarm siren that is draining your battery. The way to ensure it is the siren is to fully charge your battery and lock the car manually (not activating the alarm). Leave the car for few days (eg: 2days ) and see if on the 3rd day the battery drains out. If it does, therefore - your issue will be somewhere else. PS: Factory fitted alarm has battery that leak over the circuit board - causing electrical issues. Best of luck and let us know how it goes.
This week the siren was replaced. It started to drain 2Amps. And lost communication. Also the seat module went bad 3amp drain and a fuel pump relay fell apart. This car keeps braking for the guy.
Battery drain fixed 2003 w211 Had Faulty starter motor, disconnected permanent live wire. Left car over night and it stopped draining battery changed starter motor everything was good. Also I heard some people had issue with alternator too
What makes the beep beep beep noise when you lock this car? In mine the noise keeps getting fainter, now I need to put my ears on the hood when I lock the car to even hear it, it’s so faint.
First check should be drivers seat and passenger seat, 90% of the time thats the issue.
why ? what's in there? i didn't understand
@@thegamerboi7034 No idea but majority of cases with parasitic draw on these cars ended up leading to the seat modules
Seat module not going to sleep when car is cut off. Replace module or cut red&green Christmas tree cable to seat module
So i cut this, then what? What stops working? Weight sensor? Power seat? Heat? @@saxyric8992
Yes u absolutely right..... I remove the two fuse that powers the front seats and now my battery doesnt drain
I've had various causes for drains on MBs.
On an R500, I had a failed cluster module - it still worked, it just kept all the audio modules awake. The diag consisted of connecting DAS to the CAN buses and watching to see 'who' (in this case, the KOMBI/CLUSTER) was keeping the bus wake.
On my 05 E500 - water leaking into trunk corroded a connector on the right side of the car, where I think the satellite radio module would connect just below the right side hinge, behind the interior covers. When this connector corroded, it bridged 12v to my pink wire CAN - this fired the COMAND head-unit. Eventually the corrosion bridge to ground and popped a 5a fuse in the trunk PRE-fuse where the spare is.
SO, in some cases, you can pull a fuse and stop the draw but that may not indicate WHY a module is drawing. In the cases above, one module was bad but disconnecting the AGW saved the battery - but was not the problem. In another case, voltage leaked to the BUS, which then killed COMAND.
Well his seat computer broke he was back again with a drain. Fixed it again.
@zibi1988pl lol as we speak, mine is sitting outside with the AGW fan running. I can hear it.
There is a thread on some mercedes oil seeps into the wiring harness like a wick. And it causes a big mess in the computers. Crazy how all these computerized cars keep braking.
Customer is happy battery stays good for weeks.
Hi what was the solution?
@@alfonsocruz2111 most tof the drain was fixed with a replacement rear Sam. Rest of the drain we left alone customer was already about 1600$ into the repair.
@@zibi1988plwhich one in particular location and name of it ?
@@CharlieVega-hz2uj The whole thing
@@cali_cal mine was the passenger control seat module . Tested with multimeter
Did you pull the power connector from the passenger seat? Drivers seat? Those are common draw issues. I also found fuse 8 in my w209 pulls .1 amp. Pulled it and got the drain down to .01. put it back in since I need it for the locks. was thinking of putting a remote relay in for the security system power. PITA electronics in a super reliable car. Also you can find draw without pulling the fuse by measuring mv across the fuse. search u tube for car wizard battery drain on his slk320. Thx for the vid, wish I found it before I found my #8 the hard way.
I pulled all the fuses on the dash i
think Some are for the Seat Module??
Someone to scan it and they was telling me that it could electronic horn have you ever heard of that😊
Horn
@@marionfarmer5308 MOst people will just start throwing parts at it without fixing the problem. If the horn is a drain unplug it. I have no idea how it can have a drain but anything is possible hahahha
@@marionfarmer5308are you talking about the siren for the alarm? Not the horn you honk
wat was the solution
My remote control FOB could not open my car door. I follow a U tuber posted solution.
Take out the plastic cover at wheel arc. Took out the electric siren horn. Put back the Fuse 8 and it stays unblown. Then all powered door lockers get their power back & then could be opened by remote FOB.
Fuse 8 supply battery power to how many pieces of equipment?.
Link to video?
@@camilreese5765 key in into U tube "Mercedes W211 siren replacement diy". Enough information for dyi. Inside the sealed siren is two old nickel batteries that will leak out and damage the circuit board.
@@whlawson5812 Thanks for contributing and helping others. !!!
My head lamp flickers alongside car stereo. Sirren comes comes up at will. Heavy battery drain
@@wilfredoguru2924 take out the siren hidden under front wheel arc cover. Ensure no moisture had gone into the front and back fuse box. Check out PCB for SAM unit for moisture or corrosion. Start looking for a workshop or electrician with Mercedes know how.
Where are you located
My w211 would not crank or turn on or nothing alot of water been getting in my trunk.. could that be the problem??
yes
My friend hello from Turkey I have I model same problem.I disconnected all circuits front and back side sam unit as well front ceiling light unit but still 30 mm amp current observed.my master sad that only two possibilitys.1- front dashboard 2-ignition switch.We disconnected dasboard but still 30 mm amp current observed.We changed ignition unit first than shut down signals electronicly sends to rear sam module but we had still some drain.And we found amplifier that serious drain.we connected that line to ignition than 45 sn car was going to sleep mode and current was degreas to 0,10 amp somethink like that.I hope its works your car.Fisrt problem that the car doesnt change to sleeep mode because igniter unit doesnt sand signal to sam unit.Thats the only one way to switch sleep mode trought from igniter unit.Than you can find from sam wich system drain the battery.
Hangi araçtı bu sorun s400 mu
My 09 w211 battery drain and now my car won’t start even with a new battery any suggestions we’ll help thanks in advance
Recently I had relays mysteriously fall apart from old age. If the car cranks the fuel pump relay might be the culprit. It is the furthest down relay in the trunk fuse box. Left side of the trunk. Had 2 brake out of nowhere on this car actually this week.
The car don’t crank but all lights is on dash turns on key is sink all fuse is good 👍 no crank no start
@@borntosilence3027 Check if the starter relay gets a signal. On w211 it is in the under hood fuse box. If relay gets a go ahead from ecm and relay is good your starter should crank unless it has bad ground or it is burnt. Once I got a car. All that was wrong was the starter relay. Little 4 dollar part. Car was parked for 2 years. I had the car started before tow truck guy dropped the car down when it arrived.
Thanks bro much appreciated ur right it’s was a $10 relay 🙏
First time that I checked it remove fuse out for the right sheet and the battery still went down so I came back and pull the radio fuse out and the next morning and started the second day is started but the next day it died again
You lowered the drain but there is more to find. Get a clamp meter that does ohms with dc current.
Good day sir I will like you to teach me more about it if you don't mind okay
Bristol CT 06010 DealMaxMotors
Смотрите блок систему гетвей , она снабжает все систему джи пи эс , навигатор , аудио а так же звуковые усилители и связку блока гетвэй с блоком комфорта это болезнь w 211 до рестайлинг , этот блок является источником утечки тока, предохранители просто так не сгорают ☝️ ищите замыкание в системе , удачи