M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

AIRBAG QUESTION

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Old May 7, 2018 | 09:13 PM
  #26  
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01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Originally Posted by Maj. Dundee
Check these wires at the fan again with the key on.

RED wire is from the fuse on the battery
BROWN is ground.
WHITE is signal from ECU
BLUE is from fuse #22
How do i check the white and blue with ignition on? the red and brown is no problem, but how do i check the blue and white? multi-meter? voltage ?
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Old May 8, 2018 | 02:52 AM
  #27  
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Take a few photos of the fan module and post them.
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Old May 8, 2018 | 10:14 PM
  #28  
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Originally Posted by Maj. Dundee
Take a few photos of the fan module and post them.



Last edited by IgorE350; May 8, 2018 at 10:17 PM.
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Old May 8, 2018 | 10:19 PM
  #29  
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Old May 8, 2018 | 10:25 PM
  #30  
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Originally Posted by Maj. Dundee
Take a few photos of the fan module and post them.
Did the best i could, with the flashlight,
I was thinking what if i check the coolant sensor wires for continuity? where the other ends end, do you know by any chance? I have to find whats wrong with it
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Old May 16, 2018 | 10:43 PM
  #31  
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Is it possible to scan with a scanner? to see y the fan doesn't work?
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Old May 17, 2018 | 06:02 AM
  #32  
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Yes, if your scanner is capable of doing so.
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Old May 19, 2018 | 08:52 PM
  #33  
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lets say car is cold, i came and started and let it idle, how long does it take to fan to start blowing, or what temperature?
Funny thing, I got another ML55AMG yesterday and it does the same thing. Maybe everything is good?!
I just dont want to overheat the engine, If i knew what temperature it kicks in ill wait longer
Thanks
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Old May 20, 2018 | 04:18 AM
  #34  
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Originally Posted by IgorE350
lets say car is cold, i came and started and let it idle, how long does it take to fan to start blowing, or what temperature?
Funny thing, I got another ML55AMG yesterday and it does the same thing. Maybe everything is good?!
I just dont want to overheat the engine, If i knew what temperature it kicks in ill wait longer
Thanks
You originally stated that your fan does not come on EVER. You just do not believe that you need a new fan.

If you start the eng. and the eng. temp. reaches 90C and the fan does not come on you need a new fan.

If you then select A/C and the fan does not come on, you definitely need a new fan.
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Old May 20, 2018 | 09:31 AM
  #35  
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No,I did say fan works for about 10 to 20 sec if i select A/C and mentioned that i cant charge the A/C refrigerant for some odd reason.
And mentioned that i had another fan and id did the same thing when hooked it up. Sold that fan on ebay and buyer confirmed its working fine for him.
If it was the fan i wouldn't have a problem buying another one.
Will try to let car heat up pass 90c tomorrow and see if it will kick in. I thought that fan should kick in at 87c when thermostat opens up.
Thanks
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Old May 20, 2018 | 09:47 AM
  #36  
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Originally Posted by IgorE350
Will try to let car heat up pass 90c tomorrow and see if it will kick in. I thought that fan should kick in at 87c when thermostat opens up.
Thanks

Let's see what happens.
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Old May 20, 2018 | 03:28 PM
  #37  
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Originally Posted by Maj. Dundee
Let's see what happens.
Just started it let it run, sure enough when it got to 90c it kicked on i feel sooo stupid. i guess i didnt wait long enough for it to kick on because i didnt wanted to overheat. so i must've shut off the car right before it had to turn on
Mr Dundee, I thank you again for patience and your help.
Now i have to figure out why my AC wont let me charge refrigerant and car will be ready for painting son, cant wait =) Thanks again!!!!!
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Old May 21, 2018 | 05:16 AM
  #38  
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Originally Posted by IgorE350
Now i have to figure out why my AC wont let me charge refrigerant and car will be ready for painting son, cant wait =) Thanks again!!!!!
The A/C Compressor will not activate if the is not enough refrigerant.
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Old Jun 12, 2018 | 08:37 PM
  #39  
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Originally Posted by Maj. Dundee
The A/C Compressor will not activate if the is not enough refrigerant.
Hi mr Dundee, got my AC going. Had 2 problems. One was expansion valve was bad didn't let me fill up refrigerant, and was blowing hot air in the cabin, bad actuator motor for the flap. Got it ordered, should be in few days, but i manually turn the flap and i had nice cold air, and after i replaced the expansion valve i filled up refrigerant no problem.
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