Check Coolant Light just went off.....2006 330i

So I get up this morning to go to the gym and the check coolant light immediately came on when I started the car up cold.

Can I add some water to the radiator or some more coolant so I can get it to the stealership to have it checked out?

I don't want to drive it with this problem because I don't want to damage the engine.

Any suggestions on what the problem could be? Water pump? Thermostat? I see no signs of a leak anywhere.

If the light continues to stay on or there is a lot missing don't drive it
and look for leaks. If you find a lot missing don't drive it.
Keep track of what you put in .
Then you can add an equal amount of fluid later.
Do you ever change or check the fluid when was the last time it was changed?

I bought the car Jan 1 so I have added nothing. Can I add water and drive it 3 miles to the dealer?

I added one cup up distilled water and the light went off. I will drive to dealer Tuesday for diagnosis.

Originally Posted by JonPuyallup

I added one cup up distilled water and the light went off. I will drive to dealer Tuesday for diagnosis.

.

Probably just a couple of ounces low, relative to the sensor triggering level. I once did a similar thing - could see there was fluid in the reservoir, but it was a tad low. Added about half a glass of water, and later got the dealer to top it up with the real antifreeze mix, which completely settled the problem.

You should consider the Mike Miller Schedule.
It doesn't sound like you have a problem with the fluid just a little low.
You need to google Mike Miller BMW and email him to get the maintenance
schedule. But the lifetime fluid schedule from BMW means a lifetime of only 100k
since they do not support it after that the schedule is only built to get them through
the warranty period.
I would see if you can dig up the maintenance records if you can't find them change all the major
fluids so you know where your are starting from.
Also I would find a good independent BMW shop and do as much DIY ing as you can.

I had this on my 2007 335i. I added just the slightest amount of water (should have used BMW certified stuff ...) but for some reason I think the sensor was just stuck, and when I opened it it freed up the sensor. Anyway just an observation. Thats was 6 months ago and no issues since.

Originally Posted by ctuna

You should consider the Mike Miller Schedule.
It doesn't sound like you have a problem with the fluid just a little low.
You need to google Mike Miller BMW and email him to get the maintenance
schedule. But the lifetime fluid schedule from BMW means a lifetime of only 100k
since they do not support it after that the schedule is only built to get them through
the warranty period.
I would see if you can dig up the maintenance records if you can't find them change all the major
fluids so you know where your are starting from.
Also I would find a good independent BMW shop and do as much DIY ing as you can.

I have the Mike Miller Schedule. As money allows I will start replacing fluids.

I took it to my Indy Shop today. They did a pressure test. He said something about pumping it up to 16 and it stayed at 16 and didn't budge a bit. Whatever that means. Said if there was a leak it would have slowly decreased. He put 4 ounces of fluid in and told me to have a nice day.

Redline D6 will really smooth out the shifter. Like butter no notchiness.

Light just went on again yesterday. Added a cup of distilled water. Took it back to my mechanic again and had him pressure test it again. No leaks.

Odd. I don't think it should be eating a cup or so of fluid every three or four months.