VolvoElectrical Parts

20398484 — Ignition Switch 8159907 20398484 For Volvo Truck Fh Fm Nh12 Vah

This is an Ignition Switch that acts as the primary control for starting the engine and activating the vehicle's electrical accessories. It is manufactured to meet OEM quality standards, providing reliable electrical contacts and a durable mechanism compared to a worn switch that may feel loose or fail to make proper connections. Operators may experience an inability to start the engine, or electrical components like lights and the radio not functioning if this switch fails.

Ignition Switch 8159907 20398484 For Volvo Truck Fh Fm Nh12 Vah – Part No 20398484 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryElectrical Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeIgnition Switch
MaterialMetal and plastic
ApplicationTruck starting and electrical system control
Service LifeReplace as needed based on diagnostic testing
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The primary symptom of a failing ignition switch is the inability to start the engine or power up the vehicle's electrical systems. Intermittent issues, such as the engine cutting out or accessories failing to turn on, can also occur. Complete failure will leave the vehicle immobile and unable to operate.

Installation Tip

Before removing the old switch, carefully document the wiring harness connections to ensure proper reinstallation. Avoid applying excessive force when seating the new switch, as this can damage the dashboard mounting area.

Service Note

Check the condition of the battery and starter motor when replacing the ignition switch to ensure all starting system components are functional.