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

ML 320 (W163) oil indicator turns on and off on highway

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Old Mar 22, 2019 | 08:44 PM
  #1  
Denadaen's Avatar
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From: Melbourne, Australia
ML 320 2001
ML 320 (W163) oil indicator turns on and off on highway

Hey everybody,

I took my ML320 for a first ride on highway, driving 100km/h and after about 40 kms the oil indicator light turned on. I wanted to stop, but there was no upcoming exit, so had to continue. The light then turned off after a few kms, so I thought, all is good.
Then after so many kms, it turned back on again and off not long after.
It only does this while driving 'fast', it doesn't turn on while I drive around town.
The oil level is good, could it be the pump maybe or should I change oil and filter maybe?

Thanks for your precious help,

Cheers, Den
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Old Mar 22, 2019 | 10:44 PM
  #2  
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From: Westcoast/Interior
02w163ML500 / 97w210E50AMG / 99w202C230k / 95w124500e-wip
The oil light illuminates not only when the level is low, but also when the quality of the oil is low.
When was the last time you changed the oil?
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Old Mar 22, 2019 | 11:00 PM
  #3  
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ML 320 2001
I just bought it a few weeks ago. I didn't drive it that much yet, but I think I know what to do... Change oil and filter. Do you have any recommandation to which oil to use. I live in Melbourne Australia.
Thanks for your reply, btw...!

Cheers, Den
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Old Mar 22, 2019 | 11:04 PM
  #4  
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From: Westcoast/Interior
02w163ML500 / 97w210E50AMG / 99w202C230k / 95w124500e-wip
Originally Posted by Denadaen
I just bought it a few weeks ago. I didn't drive it that much yet, but I think I know what to do... Change oil and filter. Do you have any recommandation to which oil to use. I live in Melbourne Australia.
Thanks for your reply, btw...!

Cheers, Den
Sure do!! Use THIS, under the W163 forum

EDIT: btw, just because you just bought this a few weeks ago, doesn't mean he seller did an oil n filter change for you. NEVER assume the basics were done, unless the seller can provide you with invoicing to prove otherwise.

Last edited by khomer2; Mar 22, 2019 at 11:07 PM.
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Old Mar 22, 2019 | 11:13 PM
  #5  
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Lovely, thanks again ! 10W/40 it needs...
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Old Mar 22, 2019 | 11:17 PM
  #6  
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From: Westcoast/Interior
02w163ML500 / 97w210E50AMG / 99w202C230k / 95w124500e-wip
Originally Posted by Denadaen
Lovely, thanks again ! 10W/40 it needs...
That always works.
Alternatively, many members (with these high mileage suvs) use synthetic oil. Imho, it's a personal choice.

Have fun with your newly acquired W163.
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Old Mar 22, 2019 | 11:21 PM
  #7  
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Ah OK, good to know. Though mine has only 150.000 (real) kms. But yeah, why not going synthetic, only the best for my ML 😁
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Old Mar 23, 2019 | 03:51 AM
  #8  
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2002 ML 320 & 2006 ML500
Originally Posted by khomer2
The oil light illuminates not only when the level is low, but also when the quality of the oil is low.
When was the last time you changed the oil?
Absolutely. +1
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Last edited by Maj. Dundee; Mar 23, 2019 at 06:30 AM.
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Old Mar 23, 2019 | 07:34 PM
  #9  
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Amazing, thanks...!
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Old Apr 15, 2019 | 03:14 PM
  #10  
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From: Toronto, ON
2002 ML320 "Elegance", 2014 E350 sport sedan
Originally Posted by Denadaen
Hey everybody,

I took my ML320 for a first ride on highway, driving 100km/h and after about 40 kms the oil indicator light turned on. I wanted to stop, but there was no upcoming exit, so had to continue. The light then turned off after a few kms, so I thought, all is good.
Then after so many kms, it turned back on again and off not long after.
It only does this while driving 'fast', it doesn't turn on while I drive around town.
The oil level is good, could it be the pump maybe or should I change oil and filter maybe?

Thanks for your precious help,

Cheers, Den
Mine did the same thing a couple of months ago. I thought the oil level sensor was screwed, but apparently not - the oil level was low and topped up about half a litre and it's been good ever since...
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Old Apr 15, 2019 | 10:23 PM
  #11  
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From: Melbourne, Australia
ML 320 2001
Thanks for your comment.
I actually changed oil and all filters, runs smoothly now.
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