Question about 1998 Volkswagen Passat

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VW Passsat - 98 -

I have VW Passat 98 Model. There is no radiator water leakage but still the red coolant warning sign keep flashing and also ABS. Any suggestions, please.

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  • Saleem Almas Nov 01, 2008

    Thank you very much for the information and advice. Much obliged. Saleem Almas

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First check the coolant overflow and add a little water if low (if you have antifreeze then a pint of water will not dilute it enough to matter).   
Go to a parts store that will plug in and read the OBD II codes for free (autozone among others).  My dealer change $50 just to read the codes.  BTW you can buy a simple VW code reader for $50!   ABS system will give specific codes as to what is wrong.  Coolant warning light is usually either low coolant in resevoir or overheating.  If the coolant light comes on when you first start up,  it's probably just low coolant level.  My wifes 98 Passat and my 2005 Jetta TDI both did this for a slightly low coolant with no detectable leak.   

If you have to add coolant more than once, you may have a small internal leak (read in the cylinder head) which you will not be able to find.   A Mechanic can do a pressure leak down test to find out.  This is one of the 2 times in 35 years where I used Barr's Stop Leak on our 98 Passat with 120K miles for this slow internal leak symptom ... it's 20K miles later and I have not had to add coolant since the Barrs.  I generally hate these fix it in a can type products, since many of them are snake oil,  but Barrs can work without side effect in some cases.  I have it from a reliable source that the manufacturers use a smiliar substance on new engines now that most cylinder heads are aluminum, but I have no way to verify.
good luck ..ajm







Posted on Nov 01, 2008

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ABS and coolant are unrelated unless there is a problem with the ECM (engine control module) or instrument panel. Is the red coolant warning sign for coolant level or temperature?

With ABS if there is any failure with any brake electronic component (sensor, motor, or fluid level etc) the ABS will shut down completely and flash the light. If the light is on or flashing the ABS is non functioning.

I need better information on the coolant and ABS to give better information.

Posted on Nov 01, 2008

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