AAU1700 - PDWA switch by AftermarketElectrical Part Land Rover Range Rover Defender

AAU1700 - PDWA-schakelaar

- €60,50

€60,50

€60,50 - €60,50

€60,50

Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.

PDWA-schakelaar (Pressure Differential Warning Actuator) maakt deel uit van het hydraulische remcircuit en overbrugt de twee onafhankelijke druklijnen voor en achter.

Deze bewaakt de drukbalans tussen de twee circuits. Als een van beide circuits druk verliest, schakelt het resulterende drukverschil de schakelaar in en gaat het remwaarschuwingslampje op het instrumentenpaneel branden, wat de bestuurder waarschuwt voor een hydraulische storing. Gemonteerd op niet-ABS-toepassingen (zonder antiblokkeersysteem).

Vehicle Model Land Rover Defender tot 2016

Fitment Notes DEFENDER 1987-2006 — Druksverschilwaarschuwingsschakelaar (PDWA), modellen zonder ABS (Anti-Blokkeer Remsysteem), t.e.m. chassisnummer HA901219

Alternative Codes

AAU1700

On order 3 units · ETA 12-10-2026

Currently out of stock. Order now — we'll ship as soon as it arrives.

When will my order arrive?

We have 3 units on order from our supplier, expected 12-10-2026. Order now to reserve — we'll dispatch as soon as stock arrives.

Netherlands / Belgium / Germany: 2–4 working days after dispatch.
Other EU countries + UK: 4–8 working days after dispatch.

Need it sooner? Contact us about express import (2–5 business days).

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What does the PDWA switch do on a Land Rover Defender?

The PDWA (Pressure Differential Warning Actuator) switch monitors the balance between the front and rear brake hydraulic circuits. If either circuit loses pressure, the resulting imbalance trips the switch and lights the brake warning lamp. It's fitted to non-ABS Defenders.

Does this switch suit ABS or non-ABS brakes?

This PDWA switch suits non-ABS (less Anti-Lock Braking System) Defenders only. On ABS cars the wheel-speed sensors and modulator handle circuit monitoring, so the PDWA switch isn't used. Check your car's brake setup before ordering.

How do I confirm this PDWA switch fits my Defender?

This PDWA switch fits the Land Rover Defender from 1987 up to VIN HA901219, on non-ABS models. Later cars with ABS use a different arrangement, so use your VIN to confirm your Defender falls within that build range.

What are the signs a PDWA switch needs replacing?

A brake warning lamp that stays on with no pressure fault, or one that won't reset after bleeding, typically points to a faulty PDWA switch. The internal seals and contacts can corrode or stick over time. Confirm the hydraulic pressure is actually balanced before replacing it.