Check coolant?

Tiny
NICEMOM1800
  • MEMBER
  • 2007 MERCEDES BENZ S500
Message appears "check coolant" Is it safe to use 'Peak Ready-to-Use' In my Mercedes Benz S550 4matic?
Monday, December 1st, 2008 AT 10:22 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More than likely this is just a faulty coolant sensor or the coolant level is actually low.

I would suggest checking the coolant and if it is full then replace the sensor.

If your coolant is low then you may just want to service the system. Here is a guide that will help with this:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Please review the info below on how to replace the sensor. Please let us know if you have other questions. Thanks
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Monday, July 12th, 2021 AT 4:56 PM

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