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Doesnt start when engine is hot

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by Amigo, Sep 14, 2018.

  1. Amigo

    Amigo New Member

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    Your Mercedes:
    E class cdi 220 (2005) w211
    Hi
    I bought this car few months ago , I got problem recently with my mb (eclass e220 cdi 2005). Car starts ok wen is cold but when engine is warm and u switch it off , then it doesnt starts after wards straightaway. Message appear on the speedo meter screen that ESP fault. And Take atleast 1hr to cool down and then it starts again.
    Wondering its the battery or the starting motor or central locking etc???
     
  2. AMGeed

    AMGeed Senior Member

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    Your Mercedes:
    2004 W211 E55K ///AMG
    Your car is showing the classic symptoms of a failed Crankshaft sensor.
    Needs to be taken to a MB specialist ideally to have the stored fault codes read.
     
    bembo449 likes this.
  3. OP
    Amigo

    Amigo New Member

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    Your Mercedes:
    E class cdi 220 (2005) w211
    Thanks for the reply mate. If I jump start it, it starts away even with hot engine and and fault flash etc
     
  4. AMGeed

    AMGeed Senior Member

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    Hmmm. Never heard of a jump start being successful if the CPS is faulty??

    Those stored fault codes need to be read to investigate further.

    Re the ESP message, this may be of interest and indded your problem after all.
    http://www.mercedesmedic.com/esp-light-reset/
     
    Last edited: Sep 14, 2018
  5. mattkh

    mattkh Senior Member

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    W168 1999 1.6
    How old is the battery anyway.
     
  6. OP
    Amigo

    Amigo New Member

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  7. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    That's pretty old... It's quite likely on its last legs but get it tested and replaced if necessary.
     
  8. John Laidlaw

    John Laidlaw Senior Member

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    Your Mercedes:
    W212 E63 ///AMG V8 Biturbo Volvo XC90 2018
    13 years? Yikes
    I replace mine at 5 regardless, more recent vehicles with the masses of electrickerry barely last that !
    Would be my first action
     
  9. umblecumbuz

    umblecumbuz Senior Member

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    Your Mercedes:
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    As above. If it fails to start when hot but otherwise runs and starts normally, first suspect is usually the CPS.
    However, if it can be easily jump started when hot then that rules out the CPS, which usually needs time to cool down before it will operate correctly again.

    Battery is next suspect. It may turn the engine over for starting purposes, but may not either accept a full charge or maintain it while driving. Checking the alternator output is also worthwhile.

    Winter's approaching and your battery is past its sell by date and will fail completely soon, so it's good insurance to renew it anyway. That at least eliminates one possible cause of future trouble.
     
  10. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    The battery in my 210 is 15 years old(!) so I put it on a battery tester. It's rated at 760CCA. On the tester it managed 230....
    That's why I said to get yours checked. Mine will be replaced in a week or two. I'm fortunate enough to have a spare car if needed so it's not high priority.
     
    Last edited: Sep 21, 2018 at 2:44 PM
  11. bembo449

    bembo449 Senior Member

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    Your Mercedes:
    216 5.5 v8 , range rover vogue , 221 320cdi , alfa romeo brera
    so if its gets a battery boost ( turns over faster), its starts , yet deisels use compression to start once hot , does that not mean you have a compression issue ?
     
  12. alexanderfoti

    alexanderfoti Moderator

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    Could be, but diesel compression normally goes up when warm.

    Could be that the battery is old and knackered and cant spin the higher compression engine fast enough.

    The CLk270 cdi I had, had a battery that tested at 150CCA / 10 aH!!!

    It just about started the car, but the whole dash and all the electrical stuff turned off whilst starting, could be getting voltage low enough to cut out the engine/gearbox ecu.

    (that CLK had a new battery, which also stopped the android head unit cold booting on startup)
     
  13. bembo449

    bembo449 Senior Member

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    I remember Toyota had a massive issue with non starting D4D engines fitted to the Avensis , the starter motors wernt spinning the engine over fast enough for the electronics to instruct the fueling etc to start , it was a tiny amount but enough to stop the car starting
     

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