When should I call a technician for a John Deere that won’t start?
If basic troubleshooting doesn’t work or you notice unusual mechanical/electrical symptoms, its best to call or schedule a service with your John Deere Technician.
Some problems go beyond DIY fixes. If you've followed standard troubleshooting steps and your John Deere equipment still won’t start, or if you observe symptoms like grinding noises, visible oil or fuel leaks, strong fuel odors, or repeated electrical failures, it's time to consult a certified technician.
Complex issues such as internal engine failure, intermittent electrical faults, or ECU-related diagnostics often require advanced tools and factory-level expertise. Diesel engines with persistent injector, glow plug, or high-pressure pump issues also benefit from professional evaluation.
If you suspect hydraulic lock-up, major wiring harness damage, or control module faults, further attempts to start the machine could cause more harm. Contacting Koenig Equipment ensures your equipment is evaluated by John Deere-trained technicians who use genuine parts and diagnostic tools.
Koenig Equipment offers mobile service, in-shop repairs, and seasonal maintenance packages to keep your equipment running efficiently and reliably.
Want Koenig to take a look at your equipment? Schedule Your Service