Hella Switch, reverse light - 6ZF 008 621-301

This switch (6ZF 008 621-301) is primarily listed as compatible with Fiat DOBLO Combi (263_) models from 2010-2023. However, it is critical to verify specific vehicle measurements and compatibility details before purchasing, as variations can exist.

A 'Normally Open Contact' (NO) switch means that the electrical circuit is open (off) when the switch is not activated (i.e., when the gear lever is not in reverse). When you engage reverse gear, it actuates the switch, closing the circuit and turning on the reverse lights.

You will typically need a 22mm spanner to remove and install the switch. Depending on vehicle access, other basic tools for safely lifting the vehicle may also be required.

Common signs include reverse lights not turning on at all, reverse lights staying on constantly, or intermittent operation of the reverse lights.

The thread size for this Hella reverse light switch is M18x1.5.

Warranty information is typically provided by the retailer. Please check the product listing or contact the seller directly for details on the warranty applicable to this Hella part.

SVHC stands for Substances of Very High Concern. 'Lead' indicates that lead is present in the product, which is a regulated substance. This may require specific handling or disposal procedures according to local regulations.

Double-check the electrical connector is securely attached. Verify the switch is correctly installed and the thread is properly seated. Confirm the vehicle's reverse light bulbs are functional. Ensure the vehicle's fuse for the reverse lights is intact. If issues persist, re-verify vehicle compatibility and consider consulting a professional.

This indicates the switch may be faulty or installed incorrectly, possibly stuck in the 'closed' position. Remove and inspect the switch for damage or debris. Ensure it is the correct type ('Normally Open Contact') and installed properly. If the problem persists, the switch may need replacement.

Check for loose wiring at the connector or corrosion. Ensure the switch is fully engaged with the transmission mechanism. Sometimes, slight variations in transmission housing can affect switch actuation. If the problem continues, the switch may be defective and require replacement.