Product Summary This is a genuine factory original equipment manufacturer (OEM) Windshield Wiper Intermittent Control Relay, manufactured by SWF for classic Mercedes-Benz passenger vehicles. This specialized 12V control module dictates the precise timing intervals for the front windshield wiper system, allowing the intermittent wipe settings to function correctly under variable weather conditions.
Condition Note This part is in verified working condition. It has been salvaged from a running vehicle, cleaned, and bench tested to ensure clean relay engagement and solid circuit timing pulses. The smooth black plastic case is physically intact with no cracks or structural fractures. The mounting layout and male connection pins on the bottom are straight, solid, and entirely free of electrical arc damage or rust.
⚠️ Common Problems As these vintage factory relays reach several decades of service, the internal contact points can suffer from heat wear or hairline micro-cracks in the solder paths. When this part fails, it typically causes the intermittent wiper mode to drop out completely, causing the wiper arms to lock up mid-sweep or run continuously on high speed only.
🔧 The Part Fix Swapping out a degraded module with this genuine working SWF replacement instantly remedies erratic interval timings and restores responsive low-speed intermittent wiper sweeps. The relay is a simple plug-and-play installation inside the main auxiliary fuse panel enclosure located under the vehicle's hood line.
🔢 Part & Manufacturer Identification * Primary Stamped Mercedes-Benz OE Part Number: 000 821 08 63 * Alternate Mercedes Reference Number: A0008210863 * SWF Manufacturer Component Number: 16E 601.342 * SWF Manufacturer Diamond Logo Stamp: Visible on Casing Face * Electrical Voltage Rating: 12V