2007 Mercedes Cooling Fan Stuck on High

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 99

  • @SimplyDiagnostics
    @SimplyDiagnostics 5 років тому +16

    Great intro :) Missing you and NY already mate. Had a real downer on me when I arrived back in the UK yesterday. Full steam ahead with my plan. See you in October and thanks again for the chance to work alongside you last week mate. You're awesome!

    • @embreesmith7613
      @embreesmith7613 5 років тому +2

      really considering moving here eh ..??
      (eh -- is canadian speak ... when you're in NY, canuks aint far away .. :)

  • @txdm9383
    @txdm9383 5 років тому +6

    Had a similar issue on a Ford Edge only the fan wouldn't stay running after a body shop put an aftermarket fan on it. Found out only an OE fan would work properly on it.

  • @arthurfricchione8119
    @arthurfricchione8119 5 років тому +8

    Keith that fan sounds like it is ready launch itself into orbit. Bring Stevie back I think there is water in the trunk. Seems like he had a great time. Thanks for the video ❤️

    • @cmat57
      @cmat57 5 років тому +1

      Bring Stevie back I think there is water in the boot. Fixed it for ya!

  • @ablackformula
    @ablackformula 5 років тому +2

    How do you determine the comm wire is going wonky from the fan module? Could the wire have a fault along the way? Would I have been wasting my time by cutting the comm wire and scoping both sides of it?

  • @jaguar7051
    @jaguar7051 18 днів тому

    Switching run forward and reverse by self the motor control unit is defective or the previously installed Fan is wrong.
    Many Mercedes Cars use simple motors with two wires and an externally mounted control unit
    Change fan run direction is a switching polarity - + on place minus and opposite - fan going to run in different directions.

  • @GhettoWagon
    @GhettoWagon 5 років тому +6

    That's not a problem its just on "Airplane mode"

  • @MrSoulstealer1
    @MrSoulstealer1 3 роки тому +2

    So it was the fan motor? Not the relay?

  • @robinsonsmotorcycleandauto3929
    @robinsonsmotorcycleandauto3929 5 років тому +1

    Great video and nice showing the power of having a quality scan tool and scope seperate. Can watch the request and what is happening in the circuit at the same time.

    • @tam1381
      @tam1381 5 років тому

      Sounds like a good excuse for a new tool purchase Will.

  • @stevenweseman1473
    @stevenweseman1473 3 роки тому +2

    It is always a matter of grace to post such videos but there was no explanation as to the root cause of the problem. Replacing the fan may be the correct remedy but what has caused this issue; in what manner has the fan failed and why? How does the car electronics control the fan? What aspect of the fan has failed?

  • @mikeeustice4452
    @mikeeustice4452 5 років тому +4

    Great video .love the euro diagnostics they dont publish much info. I had a Mercedes heater fan that was changing speed by it self .when it worked I compared the signals and notice the head unit wouldnt go flat line at 12 volts at high speed request to the speed controller used a test light connected to 12 volts touch the head unit control wire and high speed blower .dont worry about time I could watch your diagnostics for hours at a time😊😊😊

  • @jaguar7051
    @jaguar7051 18 днів тому

    On the PWM system Voltage does not control the speed - voltage is fixed on the pols duty cycle to control the speed
    The cooling motor in this car has an internal module that controls the speed depending on PWM pols getting from ECU from the engine control unit ( Computer)
    Look at the tinny wire coming to the motor = it is a PWM line - in this case when speeding up no Pols = no longer control

  • @michaelsawyers1002
    @michaelsawyers1002 5 років тому +4

    Keith How was the fan running with no request. can you explain ?

    • @scowley86
      @scowley86 5 років тому

      Module. Fan module is bricked at the circuit-board level. Output driver.. maybe.. maybe a bad voltage sensing circuit. Aftermarket parts.. no bueno.

  • @danjensen100
    @danjensen100 5 років тому +6

    Hey Keith, these cars also have an issue with the driver in the engine control unit causing the fan to be commanded on high. What's weird is that it seemed to be losing the pwm signal command and would be stuck at an odd voltage.

    • @YungMar650
      @YungMar650 Місяць тому

      How would you fix if this is the case

  • @erickfadeley4999
    @erickfadeley4999 5 років тому +1

    How was the fan running with no request. Internally shorted

  • @dans_Learning_Curve
    @dans_Learning_Curve 5 років тому +1

    Does this fan get controlled through an electronic relay, AKA large transistor, like the older Jeep Grand Cherokees?
    The small current PWM from the ECU needs to be amplified by something.

    • @dans_Learning_Curve
      @dans_Learning_Curve 5 років тому

      Oh, I was thinking the video was on the short side. LoL 😂 Fun learning!

  • @electric8668
    @electric8668 4 роки тому +1

    Did it only need a new OEM fan?

  • @happy543210
    @happy543210 5 років тому +6

    oem fan probably worth half the price of the whole car!

    • @makemoneyonline8793
      @makemoneyonline8793 5 років тому

      happy543210
      A new oem fan for my 02 C-Class cost over $400, They’re expensive.

    • @jetstream454
      @jetstream454 3 роки тому

      OEM means buying direct from the manufacturer without the Benz emblem. Shouldn't be horrid.

    • @jetstream454
      @jetstream454 3 роки тому

      @@makemoneyonline8793 Not too bad?

  • @weldingjunkie
    @weldingjunkie 5 років тому +1

    Things were just starting to “heat up” when you pulled out the pico then they cooled off lol thanks for sharing sir!... jay

  • @royboytazful
    @royboytazful 4 роки тому

    My 02 c230k ecm collected moisture the design allows it to not be able to dry /drain

  • @LMAutoRepairs
    @LMAutoRepairs 5 років тому +2

    Nice one Keith...
    And you think 4 minutes video is too long...
    Finished one yesterday.... 1h and 7m....🤦‍♂️
    Thanks for sharing!

    • @NewLevelAuto
      @NewLevelAuto  5 років тому +1

      Break up the one hour into 27 parts!

    • @LMAutoRepairs
      @LMAutoRepairs 5 років тому

      @@NewLevelAuto
      🤣🤣🤣🤣
      It is about quality.... not quantity....😋
      👍👍👍👍

  • @mosesdog2
    @mosesdog2 5 років тому +2

    How are you sure that the bad signal is not coming from the ECU?

    • @NewLevelAuto
      @NewLevelAuto  5 років тому +2

      Disconnecting connector the line is at rest .3volts and doesn't change. I meant to show that as well. I was rushing so that the customer could close shop. I had gotten there 15 minutes before closing 😔

    • @mosesdog2
      @mosesdog2 5 років тому +3

      @@NewLevelAuto I think when you unplug the control wire, the ECU stops output. I did a very similar car that ended up being a bad ECU. Had overheated the main processer and warped the board. Definitive diagnostic was tapping on the ECU made the PWM freek out. I guess this diagnosis was definitive by seeing the motor turn backwards. Just trying to improve my ability to separate systems to determine if it's an output issue or a "backfeed" issue. Perhaps a substituted load on the control wire?

    • @NewLevelAuto
      @NewLevelAuto  5 років тому +2

      On this one tapping the fan koeo caused the same results. New fan is in this morning and all is well . But I do appreciate that input for sure. Love the thought process you use !

    • @rjalexander440
      @rjalexander440 4 роки тому

      My fan is turning on with no key in at full blast also radio stays on I'm guessing ecu ughhhh

    • @ASMRLIVEFEED
      @ASMRLIVEFEED 3 місяці тому

      Was it the ecu or did you get a new fan?​@rjalexander440

  • @rjalexander440
    @rjalexander440 4 роки тому

    2006 c350 fan runs full blast no key in. Also radio stays on. Alternator voltage says bad . Could it be ecu ??! Causing all

  • @manacesrosario9103
    @manacesrosario9103 6 місяців тому

    I had the same problem in a05 c240 after i did change a bad noise ac compresor that didn’t vacuum the sistem so all I did put ac gauge then i see the pressure in around 500 and supposed to be around 250-300 then I drain some air from the red hose until came down around 250 after I did that the fan starts working normal

  • @High_Tech_Mountain
    @High_Tech_Mountain 5 років тому +1

    Great Steve impersonation lol. As always great video. Thanks for sharing.
    Question about the Farsight, I see it’s running a Pico. But I heard it’s also an Autologic Scanner?
    When I used to work on euros we had the blue box circa 2011. They’ve come out w/a lot of new equipment since then.

  • @lakerssuk
    @lakerssuk 5 років тому

    I've got an 06 c230. I let it run and idle for over an hour not going over 40-45mph, no problem. As soon as i got over 45, it immediately started blowing hot air and giving a code to take it in to shop.
    Also, the fan, i wanna say, would run loudly for a few minutes after i turned it off, prior to the overheating issue. Any thoughts?

  • @billyyoder8171
    @billyyoder8171 5 років тому +1

    Thank you Keith. Good job. I appreciate your videos.

  • @alkhashtee
    @alkhashtee 2 роки тому +1

    In my case, 2004 MB E320, W210, is the fan request is always there from the front driver SAM module, which is AC signal. No communication with any SAMs, door modules, sunroof etc. Any suggestion please? Is CAN bus may cause that?

    • @williamscheer1481
      @williamscheer1481 Місяць тому +1

      Your 2004 E320 is the newer W211 platform. W210 last year of production was 2003.

    • @alkhashtee
      @alkhashtee Місяць тому

      @williamscheer1481 you are right it was W211. And by the way I figured it out and it was the gateway module under the steering column.
      For some reason it was soaked with water and damaged.
      Thank you for your reply

  • @jonarruda2719
    @jonarruda2719 5 років тому

    Any words on that Farsight tool?

  • @XPawnSkumX
    @XPawnSkumX 3 роки тому +1

    Ive replaced fan and motor and that didnt fix it

  • @kellyr9388
    @kellyr9388 5 років тому +3

    Keep up the German fish tank repair videos Keith.. Cheers

  • @artsimannisto5659
    @artsimannisto5659 5 років тому +1

    I have a 350 4matic e-merc,model 2010. Fan was loud,it started itselves at freezing point minus 5 celsius. Only turn power on,not started the engine,then after 10 seconds fan was self started and full throttle. I bought a new blower and it fixed it all. Blower ecu was a mess. Not cars own ecu.In fan there is its own ecu-unit. 450 euros plus assembly......my first merc, w212 luxury limousine.and veeery exxpensive.Greetings from suomi finland.

  • @nicknicu1787
    @nicknicu1787 5 років тому +1

    Cool issue, thanks for showing! 👍 OEM every time or one should find out who actually makes the part before the manufacturer stamps their name on it : save a lot of money that way..

  • @diymisfit_Mechanic_UDX404
    @diymisfit_Mechanic_UDX404 5 років тому +1

    OMG! you took almost 6 minutes LOL. awesome stuff there, it was worth it

  • @fire7765
    @fire7765 5 років тому +1

    Great find, thx for sharing.

  • @XPawnSkumX
    @XPawnSkumX 3 роки тому

    so how do you fix it I've replaced fans relays what do you do to fix it?

  • @daddyjay319
    @daddyjay319 5 років тому

    Great. Video . Is there any way to confirm that the ecm request is at the fan module ... I believe it is a pwm control. . As always these MB fan short internally .. and OEM are not cheap but they do last longer. ..

  • @stephenmorrison6064
    @stephenmorrison6064 5 років тому

    you been there a couple of hrs before your edit ????

  • @Micko350
    @Micko350 5 років тому +1

    Keith it's 'Hello Faceboooook!' 🤣

  • @robc5955
    @robc5955 5 років тому

    Wow seemed like high def video as well as extremely useful, cheers.

  • @scottpearsontoolsmore185
    @scottpearsontoolsmore185 5 років тому +1

    Great video thanks brother. I have never seen one want to run backwards unless you wanted it to or made it. Very interesting information. Keep up the great work see you in the next video thanks again brother

  • @elcheapo5302
    @elcheapo5302 5 років тому +1

    No fish in that one? 😂

  • @lovetolearn5253
    @lovetolearn5253 5 років тому +1

    Throw some holy water on the fan you'll be fine. it's just possessed happens all the time

  • @63256325N
    @63256325N 5 років тому

    Gremlins, ghost in the machine, get out, get out while you still can! lol.
    Thanks for the video.

  • @yhwe100
    @yhwe100 3 роки тому

    I had the same problem with my W203. The battery was weak and failing. Change the battery and the problem is solved.

  • @michaelnicholson9092
    @michaelnicholson9092 5 років тому +1

    Great video. Very good information.

  • @ScienceOfDiagnostics
    @ScienceOfDiagnostics 5 років тому +1

    Your on fire today, I like it. Should we expect a third or fourth?
    Either way, damn cool failure.

    • @NewLevelAuto
      @NewLevelAuto  5 років тому +1

      I have been watching you put out something like 8 videos today I was starting to get jealous

    • @ScienceOfDiagnostics
      @ScienceOfDiagnostics 5 років тому

      @@NewLevelAuto quantity not quality. I dont have any cool failures today, that cooling fan beats a wonky ECU any day.

    • @NewLevelAuto
      @NewLevelAuto  5 років тому +1

      I watched them all and really enjoyed them.

    • @ScienceOfDiagnostics
      @ScienceOfDiagnostics 5 років тому

      @@NewLevelAuto I appreciate that.

  • @enlightenedillumination
    @enlightenedillumination 2 роки тому

    Please show it is fixed

    • @NewLevelAuto
      @NewLevelAuto  2 роки тому

      That's 3 years ago at another shop I diagnosed for. Sorry

  • @wyattoneable
    @wyattoneable 5 років тому

    That was a great capture.

  • @rogervonschleusingen4603
    @rogervonschleusingen4603 Рік тому

    THE PROBLEM IS COMPUTERS , COSTING ONE OR TWO THOUSAND DOLLARS TO FIX, TODAYS INSANITY !!

  • @chinonsochibuzo3317
    @chinonsochibuzo3317 2 роки тому

    Also hard starting

  • @SteveRobReviews
    @SteveRobReviews 5 років тому

    Very cool bud 👍

  • @CoolAirVw
    @CoolAirVw 5 років тому

    thanks for sharing.

  • @philh9238
    @philh9238 5 років тому

    soundedjust likesteve at the beginning!

  • @orville58
    @orville58 5 років тому +1

    Great stuff thanks

  • @justinhayward5027
    @justinhayward5027 5 років тому +1

    Get to the point already with this long video lol

  • @JJ-rs6qt
    @JJ-rs6qt 5 років тому

    2007 Mercedes Helicopter

  • @epjose6607
    @epjose6607 5 років тому

    Reeeeeeeeeverse polarity

  • @naushadali95
    @naushadali95 5 років тому

    great video.

  • @MrEdrisdem
    @MrEdrisdem 4 роки тому

    It would of been more helpful if u showed how to fix it instead saying " look look the fan the fan its its going look look", smh

    • @NewLevelAuto
      @NewLevelAuto  4 роки тому +1

      Right , you're new to the channel. I am a mobile tech whose job is to diagnose . The repair shops wouldn't want to pay me labor at 135 an hour to replace a cable that they will pay their employee 30 on .

  • @SuperMarioDiagnostics
    @SuperMarioDiagnostics 5 років тому

    First guess, comm issue

  • @protoculture289
    @protoculture289 5 років тому +1

    Shit Chinese aftermarket parts

  • @daviddasilva4897
    @daviddasilva4897 5 років тому

    Yeah another video

  • @jaguar7051
    @jaguar7051 18 днів тому

    Joe no PWM pols fan is going to run on max speed
    Speed only controlled by PWM pols - duty cycle low low speed - duty cycle hi-speed hi

  • @iamher6422
    @iamher6422 10 місяців тому

    And all YOU did was jibber jabber here. Learned absolutely nothing

    • @NewLevelAuto
      @NewLevelAuto  10 місяців тому +1

      Sorry you weren't able to learn anything. Hope you found your answers elsewhere. Have a beautiful day!

  • @richardcranium5839
    @richardcranium5839 5 років тому

    wierd

    • @NewLevelAuto
      @NewLevelAuto  5 років тому

      Name calling? 🙄☝️
      .
      .
      🤣

    • @richardcranium5839
      @richardcranium5839 5 років тому

      @@NewLevelAuto just the way this thing is engineered(i use that term loosely) power and control means there is some type of electronics in the motor assy why would you put electronics in a hot spot???

  • @autotechking2973
    @autotechking2973 5 років тому

    First