BOSCH Front Brake Pad Wear Sensor — Mercedes-Benz A1695401617

OE Reference: A 169 540 16 17 / A1695401617 / 1695401617
Brand: BOSCH (OE supplier to Mercedes-Benz)
Quality Standard: OE (Original Equipment) Quality
Position: Front Axle (typically passenger-side wheel)
Quantity Required per Vehicle: 1 per front axle (separate sensor for rear axle)

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📋 Product Description

This BOSCH brake pad wear sensor is engineered to OE specifications for Mercedes-Benz vehicles using OEM number A1695401617. The sensor is a critical safety component that monitors front brake pad thickness and alerts the driver via a "Check Brake Pad Wear" warning on the dashboard when the pads reach their minimum thickness — protecting your braking system from damage and ensuring safe stopping performance.

The sensor uses a simple two-pin contact design. As the brake pad wears down with normal use, the sensor head eventually makes contact with the spinning brake rotor. This contact destroys the sensor wire, breaking an electrical circuit and triggering the warning light on your instrument cluster.

BOSCH is a global leader in automotive electronics and one of Mercedes-Benz's primary OE suppliers — backed by over 130 years of engineering excellence based in Stuttgart, Germany.

✅ Key Features

• OE (Original Equipment) quality — direct replacement for OEM A1695401617
• High-temperature resistant materials for reliable operation under braking heat
• Direct plug-and-play installation — no wiring modifications required
• Triggers "Check Brake Pad Wear" warning on Mercedes instrument cluster
• Front axle position (typically passenger-side wheel)
• Manufactured by BOSCH (Germany) — primary Mercedes-Benz OE supplier

📐 Position & Quantity

• Axle: Front Axle
• Side: Typically Passenger Side (single sensor per axle)
• Quantity per Vehicle: 1 piece for front axle (this listing) + 1 separate sensor for rear axle (different part number)
• Replacement Interval: Replace at every brake pad change if the warning light has triggered

⚠️ Important — One-Time Use Component: Once the "Check Brake Pad Wear" warning has triggered, the sensor has made contact with the brake rotor and has been destroyed — it cannot be reused. Always replace the wear sensor when changing brake pads after a warning. Many Mercedes vehicles have a separate rear axle sensor with a different part number — check both axles.

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🔢 OE Reference Numbers (Replaces)

• A 169 540 16 17 / A1695401617
• 169 540 16 17 / 1695401617

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🚗 Vehicle Compatibility

Fits a wide range of Mercedes-Benz models using OEM A1695401617 for the front axle wear sensor.

MERCEDES-BENZ — Passenger Cars

• A-Class (W176) — 2012 → 2018 — All variants including A160, A180, A200, A220, A250, A45 AMG
• A-Class (W177) / Sedan (V177) — 2018 onwards — All variants
• B-Class (W246, W242) — 2011 → 2018 — All variants including B160, B180, B200, B220, B250
• B-Class (W247) — 2019 onwards — All variants
• C-Class (W204, S204, C204) — 2007 → 2014 — Selected variants
• C-Class (W205, S205, A205, C205) — 2014 → 2021 — All variants including C200, C220d, C300, C43 AMG, C63 AMG
• CLA (C117, X117) — 2013 → 2019 — All variants
• CLA (C118, X118) — 2019 onwards — All variants
• E-Class (W213, S213, A238, C238) — 2016 onwards — All variants including E200, E220d, E300, E63 AMG
• GLA (X156) — 2013 → 2020 — All variants
• GLA (H247) — 2020 onwards — All variants
• GLB (X247) — 2019 onwards — All variants
• GLC / GLC Coupé (X253, C253) — 2015 onwards — All variants including GLC200, GLC220d, GLC300, GLC43 AMG, GLC63 AMG

⚠️ Important: Vehicle compatibility above is provided as a general reference. Always verify the OE part number A1695401617 matches your vehicle by checking your VIN with a Mercedes-Benz dealer or using an EPC system before purchasing. Different Mercedes models use different sensor part numbers — please confirm fitment for your specific vehicle.

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📦 What's Included

1 × Front Brake Pad Wear Sensor for Mercedes-Benz A1695401617 (single sensor, fits front axle).
Note: For complete front + rear brake pad replacement, you may also need the rear axle wear sensor (different part number).

🔧 Installation Notes

Installation should be performed by a qualified technician during a brake pad replacement service:

• Disconnect the battery before working on the brake system
• Remove the old wear sensor from the brake pad backing plate
• Install the new sensor and route the wiring through the original clips
• Connect the electrical plug to the vehicle harness
• After installation, the "Check Brake Pad Wear" warning will reset automatically once you start the engine

⚠️ Common Symptoms — When to Replace

• "Check Brake Pad Wear" warning on the instrument cluster
• Brake pad wear warning light stays on permanently
• Performing routine brake pad replacement (replace sensor with pads)
• Visible wear or damage to the sensor wire/head

🚚 Shipping & Returns

Fast dispatch from our warehouse with tracked shipping to all destinations.
30-day return policy — please contact us first if there is any issue with your order, and we will resolve it quickly.

💬 Questions?

If you have any questions about fitment, shipping, or the product itself, please send us a message. We respond to all inquiries within 24 hours.