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Glow Plug Relay

Critical For Operation

Engine

Controls power delivery to the glow plugs.

The glow plug relay manages the electrical current supplied to the glow plugs, ensuring they receive the correct amount of power for optimal heating and engine starting.

💵
Typical part cost
$20–$60🔒
🔧
Typical labor cost
$50–$150🔒
🛣️
Typically lasts
80,000–150,000 mi
📅
Or about
7.0–10.0 years
🛠️
DIY difficulty
3/10

⚠️ Owners Often Notice

If the Glow Plug Relay is starting to fail, these are the signs owners most commonly report before it gets worse:

Hard starting
Engine misfires
Glow plug light stays on
Poor fuel economy

Related Services

Services commonly performed on or around this part.

Replace Glow Plug Relay

No standard interval on file

Inspect Glow Plug Relay

No standard interval on file

Test Glow Plug Relay

No standard interval on file