ZAPOSTS front view of master switch showing button layout and fit benefit
ZAPOSTS connector close-up showing 18-pin plug for easy compatibility confirmation
ZAPOSTS rear housing detail highlighting secure mounting points and durability benefit
ZAPOSTS installed in driver door demonstrating restored window and mirror control
ZAPOSTS button texture close-up showing tactile surface for reliable operation
ZAPOSTS switch beside ruler showing dimensions for accurate fit verification
ZAPOSTS packaging and label showing OEM number match for confident purchase

ZAPOSTS

ZAPOSTS Power Window Master Switch for Volvo Driver Side 18-Pin — Restores Windows, Mirrors & Locks

High-performance automotive accessories made for confident daily results

$47.00

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Why customers choose NorthTrail Auto

ZAPOSTS Power Window Master Switch is a direct-fit driver-side control module that replaces OEM part 20752918 and restores power window, mirror and lock functions on compatible Volvo trucks. This heavy-duty replacement switch is engineered to match the form and function of the original equipment for several Volvo commercial models. It is a plug-and-play driver door master switch that controls power windows, power mirrors (including heated mirror function), and door locks for the models and years listed. Before ordering, verify your vehicle model and the OEM or interchangeable part number to ensure compatibility.

Which Volvo models and years will this switch fit?

The ZAPOSTS master switch is designed for specific Volvo truck models across multiple years. Confirm your truck is one of the listed models and that it uses a matching OEM or interchangeable number before installation.

  • Fits Volvo VAH: 2011–2015 with power locks, power mirror, heated mirrors
  • Fits Volvo VHD: 2004–2015 with power locks, power mirror, heated mirrors
  • Fits Volvo VNL: 2004–2017 with power locks, power mirror, heated mirrors
  • Fits Volvo VT: 2004–2014 with power locks, power mirror, heated mirrors

How do I confirm compatibility with my current OEM part?

Match the replacement to your existing switch’s part number and the physical connector arrangement. The ZAPOSTS unit replaces several common OEM numbers but always cross-check the exact code on your original part.

  • Interchangeable part numbers: 20953592, 20455317, 20452017, 21354601, 21277587, 20568857, 20752918
  • Visual check: confirm an 18-pin connector and identical plug shape
  • Model/year match: confirm your truck make and year before purchase

What should I know before installing the replacement switch?

Installation is straightforward but requires basic precautions to protect the switch and vehicle electronics. The unit uses a plug-and-play approach, but proper alignment and power-off steps prevent damage to pins and ensure reliable contact.

  • Turn off vehicle power before replacing the switch
  • Align connector and insert straight to avoid pin bending or poor contact
  • Confirm the plug seats fully and securely in the socket
  • No special tools required for standard installations

What functions will this master switch control once installed?

Once fitted, the master switch restores primary door controls to the driver’s panel. It handles the most common convenience and safety features expected from the original equipment configuration.

  • Power window up/down control for all doors
  • Power mirror adjustment, including heated mirror activation where applicable
  • Door lock/unlock control from the driver side
Who is this for?

This ZAPOSTS driver-side master switch is for fleet managers, owner-operators, and technicians needing a reliable, cost-effective replacement for a failed or intermittent driver door control on compatible Volvo VAH, VHD, VNL, and VT trucks. If your truck’s original switch shows sticky buttons, broken mirror adjustment, or intermittent lock control and it matches the listed years and part numbers, this unit is intended as a direct replacement. Always verify compatibility with your vehicle’s part number and wiring before purchase.

FAQ

Q: Does this switch require professional installation?

A: No. It is plug-and-play, but turn off power and align the connector carefully to avoid pin damage.

Q: Will this replace OEM part 20752918?

A: Yes. It replaces 20752918 and other interchangeable numbers; confirm your part number before buying.

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