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Discussion Starter · #1 ·
Hi Everyone,

I am new to the forum and also a 4 month old owner of a 2012 535ix.

I am reaching out for help about an issue I am having with my BMW.

I am getting the following messages:

1.) Engine bay compartment is hot.
2.) Engine is overheating, please stop engine.

So, I have done the following:

1.) Checked coolant levels - all good
2.) Open cap to radiator, coolant is being pumped so water pump is working


Here are the things I have noticed:

1.) I turn on the AC and once the temp gauge hits 240 the fan kicks in....
2.) Radiator fan kicks in at full speed....Goes off for like 10 seconds and fires back up again.
3.) If the car is parked, leave the ac running after 15-20 minutes message shows engine comparment is hot.
4.) I noticed also behind the kidney grills there are what look like vents that open up once you start the car. But I did notice once the car is hot and the fan is kicking in like crazy, those vents are closed.

So, my thinking is those vents are the issue. I think they should be open when the heat in the engine compartment is very very hot.

Possible relay is bad????

Can someone please help me out and what I can do to fix this issue.

Thank you all for youe help.
 

· Registered
Joined
·
3,847 Posts
Hi Everyone,

I am new to the forum and also a 4 month old owner of a 2012 535ix.

I am reaching out for help about an issue I am having with my BMW.

I am getting the following messages:

1.) Engine bay compartment is hot.
2.) Engine is overheating, please stop engine.

So, I have done the following:

1.) Checked coolant levels - all good
2.) Open cap to radiator, coolant is being pumped so water pump is working

Here are the things I have noticed:

1.) I turn on the AC and once the temp gauge hits 240 the fan kicks in....
2.) Radiator fan kicks in at full speed....Goes off for like 10 seconds and fires back up again.
3.) If the car is parked, leave the ac running after 15-20 minutes message shows engine comparment is hot.
4.) I noticed also behind the kidney grills there are what look like vents that open up once you start the car. But I did notice once the car is hot and the fan is kicking in like crazy, those vents are closed.

So, my thinking is those vents are the issue. I think they should be open when the heat in the engine compartment is very very hot.

Possible relay is bad????

Can someone please help me out and what I can do to fix this issue.

Thank you all for youe help.
The engine compartment hot warning is normal. It is to warn you that you could burn yourself under there. The temp gauge is your oil temp, NOT water temp. My '12 535i also has the vanes and I don't remember seeing them open. Can you move them open by hand?

Engine overheating is something you'll want to sort out.
 
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