Glow plugs preheat the diesel cylinders so your Sprinter starts cleanly on cool Riverside mornings. When they fail you get hard starts, white smoke, and a glow plug light. We test each plug and the control module, then replace the failed units with the correct heat range.
What this service includes
- Read glow plug and module fault codes with Xentry
- Resistance test each plug to confirm which have failed
- Extract and replace failed plugs with genuine units
- Verify the glow control module and clear stored faults
Signs your Sprinter needs it
- Hard starting or long cranking when the engine is cold
- Glow plug or check engine light is on
- White smoke and rough idle for the first minute
What does glow plug replacement cost?
Ballpark pricing for glow plug replacement on a Sprinter runs $400 to $1,200. The final number depends on your model, mileage, and the exact cause, which we confirm with Xentry before any work is authorized. Diagnostic time is credited toward the repair. See the full pricing page.
Frequently asked questions
Can I drive with a bad glow plug?
You may still start, but a failed plug strains the starter and battery and can crack over time. Replacing early avoids a seized plug that turns a simple job into an extraction.
Do all glow plugs get replaced at once?
We test each one and recommend replacing the full set when several are weak, since they age together and a partial job often leads to a repeat visit.