Because of issues with the glow plugs and/or the glow plug wiring harness from the control relay, the Check Engine Light may illuminate. Our technicians tell us there is a service bulletin, not a recall from Volkswagen regarding replacement of the glow plugs on 2004-2005 model years only.
Problems for specific Volkswagen Jetta TDI years:
Car problem reports
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Newest reported 1998 Volkswagen Jetta TDI problems
Heater core leaks are common in this model, more so if the wrong anti-freeze/coolant is used in the cooling system.
Reverse gear failures and noise in the manual transmission models are common.
Electrical issues that are difficult to diagnose—and sometimes intermittent—are typically due to ground wiring issues. The most troublesome ground locations are under the battery or at the engine.
Shifting issues due to internal problems in high mileage automatic transmissions can be difficult to resolve without transmission replacement.