2003 Volkswagen Jetta Loosing Coolant

2003 VOLKSWAGEN JETTA

75,000 MILES • 4 CYL • 2WD • MANUAL

DCCOLVIN

MEMBER
1 POST

I have a 2003 VW Jetta 1.8T, it drives perfect. However, the coolant doesn't return to the reservoir, sometimes when I release the reservoir cap it will start to rise. Sometimes it doesn't. No smoke or sweet smell from the exhaust. Could it be that the reserevoir cap is not sealing tight?

Jul 5, 2008 at 10:49 PM

KHLOW2008

✓ASE Certified Mechanic
41,814 POSTS

Hi dccolvin,

No, it is not the reservoir cap.

The system is under pressure and when you release the cap, pressure will escape thus the rise in the level.

The coolant is recycling when the engine is started so you would not see much difference in the level.

If the coolant keeps disappearing, you need to check for leakages. Check hose joints.

Jul 6, 2008 at 12:15 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.