Question about 1997 Mercedes-Benz Mercedes Benz Sl Class

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The coolant level light on dash stays on. I have checked the coolant and it is full with a 50/50 mixture. Is there a reset button or something else I should check?

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At the bottom of coolant container their is a electrical sensor clean wel.l unplug fill back up

Posted on Jun 19, 2009


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My 2006 Caravan temperature gauge goes to red - engine is not overheating. Kick it into a lower gear (automatic trans) and the gauge comes back down. Is it likely the coolant sensor?

Could be.. is the system FULL? Air in it can cause some odd things. When engine and coolant are COLD (as in after sitting over night), open the radiator cap. Top off the overflow res with a 50/50 antifreeze / water mixture to HOT mark. Start engine, turn heat to hot and fan to high. Top off RADIATOR with same 50/50 mixture slowly & gradually. As the coolant circulates, it should bring any AIR trapped in the system (from heater core & engine block) to the radiator where you can replace it with the 50/50 mix. Once the coolant is HOT and stays level - about an inch under the opening, close the radiator. Monitor the overflow res and add as needed. Good luck!

Sep 23, 2015 | 2006 Dodge Grand Caravan

1 Answer

Low coolant level light on

Check that the wiring and terminals to the sender unit are not broken or dirty. If they are good maybe the sender unit it self is not working.

Jun 07, 2015 | 1985 Jaguar XJ6

2 Answers

I have a 1999 oldsmobile intrigue with a 3.5 engine and it is overheating what might be the problem?

It's usually the thermostat, I woud pressure test the cap. It may need to be flushed. Are the fans working? Is there a 50/50 mix of anti-freeze

Sep 11, 2011 | 1999 Oldsmobile Intrigue

2 Answers

2006 dodge grand caravan heater only blows warm air when i am accelerating

With the engine cold check the coolant level. Add as necessary. If the coolant gets low enough the first thing to stop working is the heat. Accelerating will push coolant into the void and provide heat until you slow down and then the coolant drains back into the motor.

If you have lost enough coolant to loose heat there is a leak. Some common areas are the rear heater lines under the passenger side of the van, the water pump, and the radiator.

I’m happy to assist further over the phone at

Dec 14, 2010 | Dodge Grand Caravan Cars & Trucks

1 Answer

I have no heat on idle and no heat while driving. It was no heat on idle got my oil changed and now no heat at all. :(

Check your coolant level! The coolant has to be fairly full in order to heat the heater coil. If your coolant is at proper level and your mixture is good (around 50/50) your thermostat may be stuck open. This should have nothing to do with your latest oil change.

Dec 14, 2010 | 2005 Nissan Altima

1 Answer

A symbol with an arrow pointing down at a low water level it looks like came on in my car a couple days ago and I don't have a clue as to what it is...I own a L200 saturn 2003

Its a warning light to let you know that your coolant level is low. When the engine is cold remove the reservoir cap. If the coolant is red add a mixture of 50/50 dexcool and water. If the coolant is green add a 50/50 mix of regular coolant and water. If you cannot tell what color it is add a 50/50 mix of all make/models coolant and water.

Fill until the level reaches the full mark on the bottle.

Sometimes it will take the light a little while to go out and sometimes you literally have to whack the reservoir a couple of times with a rubber mallet to get it to turn off.

If it goes low again in a fairly short period of time than you most likely have a leak in the cooling system.

I’m happy to assist further over the phone at

Dec 07, 2010 | 2002 Saturn L-Series

2 Answers

How to check the coolant level

There is a coolant reservoir that is located under the hood. There will be a indicator on the side of it saying full when cold or hot. Fill a 50/50 mixture to the level depending on the vehicle engine temp.

Nov 30, 2010 | 2000 Ford Focus

1 Answer

Is there special directions to put coolant in?

Welcome to

How to Fill Coolant

If the coolant system has been flushed, first add 100 percent ethylene glycol in

the amount listed for the appropriate engine application. Then slowly add clean

water to the system until the level of the coolant mixture has reached the base-of

the radiator neck. Wait for two minutes and recheck the level of the coolant

mixture. add clean water if necessary to restore the coolant mixture level to the

base of the radiator neck

When refilling the engine cooling system, add three engine coolant supplement

sealant pellets, GM RN 3634621 or equivalent, and GM approved new Ethylene

Glycol Coolant DEX-COOL GM RN 9985809.

If the cooling system is being refilled ONLY (no flush), a 50 percent ethylene

glycol and 50 percent clean water mixture should be used to fill the system. Fill

the system until the level of the 50150 mixture has reached the base of the radiator

neck. Wait two minutes and recheck the level of the coolant mixture. add a 50/50

ethylene glycol water mixture as necessary to restore the coolant mixture level to

the base of the radiator neck.

Install the radiator cap making certain the arrows line up with the overflow tube.

Close all air bleeds. DO NOT over torque the air bleed valve. The air bleed valve is

made out of brass.

Fill the coolant reservoir with a 50 percent ethylene glycol and a 50 percent clean

water coolant mixture. The proper amount of this mixture to be installed into the

coolant reservoir is listed below:

Add 0.65 liters (0.68 quarts) of a 5010 mixture of ethylene glycol and clean water

to the coolant recovery reservoir.

CAUTION: The low coolant indicator lamp may come on after this procedure. After

operating the vehicle so that the engine heats up and cools down three times. if at

any time the "TEMP' warning indicator comes on. Immediate action is required.

Air bleed vent is at the thermostat house

Thank you for using

Regards, Lee Davidian

Nov 09, 2010 | 1997 Pontiac Grand Prix

3 Answers

Gurgling water sound in dash


Nov 05, 2009 | 2004 Pontiac Grand Prix

1 Answer

Hot air does not come inside the car. It blows cold air only.

First check for coolant leaks(under the car,chech the radiator hoses and heater hoses) particularly under the dash.(this is something you wouldve smelled)If you find coolant under the dah inside the car your problem is the heater core.Next check coolant level.If low add coolant water mixture (50%water/50%coolant) If all this checks out your problem may be the heater bypass valve.It's a disc shaped control valve located on one of the heater hoses.It's a very cheap fix by any "honest"service shop

Sep 18, 2009 | 2000 Ford Escort

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