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When the 2003 Volkswagen Jetta is equipped with the 2.0-liter engine, it comes with a 94R battery that can deliver 850 cold cranking amps. The typical cost to replace this component in the Jetta ranges from $200 to $230, with labor making up $50 to $70 of that total. You can save some money by handling the service yourself. Before buying a new battery, inspect the terminals and connections as sometimes cleaning away corrosion may be all that's needed. However, if you see fluffy blue corrosion or a clear film on the battery's case, cleaning won't be effective and indicates a battery issue. It's generally advisable to replace this part every three years, although your specific timing will depend on your driving habits. Warning signs that it's time for a replacement include the battery light turning on, slow cranking, clicking sounds without the engine turning over, a rotten egg smell, and dimming headlights.
The battery size for a 2003 VW Jetta 2.0 is the Duralast Platinum Battery H7-AGM in Group Size 94R with 850 cold cranking amps.
The h6 battery group size is ideal for fitting the 2003 Volkswagen Jetta perfectly.