ZAPOSTS Power Window Master Switch for Volvo Trucks — Driver Side 18‑Pin OEM Fit (Restores Mirrors & Locks)

If your Volvo’s driver door master switch has stopped responding or the mirror adjustments and window control are intermittent, this ZAPOSTS replacement matches the original form and wiring to return full functionality. Engineered to work with specific Volvo VAH, VHD, VNL and VT model years, the unit uses the same 18-pin layout as the OEM 20752918 and several interchangeable part numbers so installation is plug-and-play for most owners.

How do I know this switch fits my Volvo truck?

Start by confirming your truck model and production year against the listed compatibility. Then check the existing switch’s part number or confirm that it uses the 18-pin driver-side connector compatible with the OEM equivalents listed below.

• Compatible models: Volvo VAH 2011–2015, VHD 2004–2015, VNL 2004–2017, VT 2004–2014.
• Interchangeable OEM numbers: 20953592, 20455317, 20452017, 21354601, 21277587, 20568857, 20752918.
• Check your vehicle’s service manual or the sticker on the original switch for the exact part number.

What features and functions will this replacement restore?

This master switch returns driver-side control over power windows, power mirrors and heated mirror functions when the original switch fails. It was designed to match the original electrical layout and mechanical fit so controls behave as they did from the factory.

• Restores power mirror adjustment and heated mirror activation.
• Re-enables driver-side window up/down control and lock/unlock signals.
• Uses the same 18-pin connector for correct wiring and signal routing.

How difficult is installation and what precautions should I take?

Installation is intended to be straightforward: the replacement is plug-and-play if your connector and pin count match. Basic hand tools may be needed to remove the door trim; follow safety steps to avoid damage and ensure reliable contacts.

• Turn vehicle power off before disconnecting the old switch to prevent shorts.
• Align the switch parallel to the socket when plugging in to avoid pin bending or poor contact.
• Confirm the plug is seated fully and test all functions before reassembling the door panel.

Which part numbers does this unit replace and why does that matter?

The ZAPOSTS master switch is compatible with several OEM numbers, so it can substitute for different factory variants used across model years. Matching the part numbers reduces the risk of electrical mismatch and ensures the replacement fits the original opening and connector.

• Replaces OEM/alternate numbers: 20953592, 20455317, 20452017, 21354601, 21277587, 20568857, 20752918.
• Part-number matching ensures correct pin assignments and function mapping.
• If unsure, compare the physical connector and pins on your original switch.

Who is this for: This ZAPOSTS driver-side master switch is intended for Volvo truck owners, fleet technicians and DIY mechanics who need an affordable, OEM-compatible replacement for nonworking window and mirror controls on VAH (2011–2015), VHD (2004–2015), VNL (2004–2017) and VT (2004–2014) models. Before ordering, verify your truck year and the original switch part number or connector style to ensure correct fitment. Follow the basic installation precautions—power off, align pins, confirm seating—to complete a reliable swap without specialty tools.

• Compatible: Fits Volvo VAH 2011–2015, VHD 2004–2015, VNL 2004–2017, VT 2004–2014.
• OE part numbers supported: 20953592, 20455317, 20452017, 21354601, 21277587, 20568857, 20752918.
• Attention: Confirm vehicle model and part interchangeability before purchase.
• Easy installation: Plug-and-play replacement for driver-side master switch.