The 1993 Mercedes-Benz 300 has 1 NHTSA recall campaign affecting an estimated 28,874 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 51 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
IF ONE OF THE HEADLAMP WIPER ARMS BECOMES MISALIGNED, THE WIPER BALDE CAN LODGE IN THE GROOVE UNDER THE HEADLAMP. IF THE WASHERS ARE ACTIVATED WITH THE WIPER BLADE IN THE MISALIGNED AND LODGED POSITION, THE WASHER PUMP WILL RUN CONTINUOUSLY EXPELLING ALL AVAILABLE FLUID.
PUMP OPERATION IN THE ABSENCE OF FLUID CAN CAUSE THE PUMP TO OVERHEAT AND CAUSE A VEHICLE FIRE.
DEALERS WILL REPLACE THE HEADLAMP WASHER PUMP ON THESE VEHICLES.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“The engine harness problem after owning my car since 1993. It is clear that the engine harness was made with biodegradable material which has now lost it's plastic covering over the metal wires. With wires exposed after the engine harness degration, the car which was supposed to last me for a long…”
“My research indicate that this engine wiring harness problem is an ongoing issue for many mercedes benz, 300 e, and 300se cars with the twin cam engines made between the years of 1993-1995. Not only I am unable to have routine maintenance done, but I am told by the repair facility that this…”
“During normal operation of my vehicle, the vehicle began to act erratically. At start, the vehicle would not normally idle; instead it lurched between 500-1500 rpm. During operation, at a random points, the vehicle would not respond to pressing the gas, instead surging power until I stop and idle…”
“1. Burning smell 2. Poor running fast idle to no idle 3. Bm never heard of the problem. *tr”
“The engine / fuel injection wiring harness of my 1993 mercedes-benz 300e has cracked insulation throughout and is beginning to short out with the risk of causing dangerous engine malfunction and even fire inside my engine compartment. I have read many reports of other mercedes-benz cars of the…”
“The engine / fuel injection wiring harness of my 1993 mercedes-benz 300e has cracked insulation throughout and is beginning to short out with the risk of causing dangerous engine malfunction and even fire inside my engine compartment. I have read many reports of other mercedes-benz cars of the…”
“The engine / fuel injection wiring harness of my 1993 mercedes-benz 300e has cracked insulation throughout and is beginning to short out with the risk of causing dangerous engine malfunction and even fire inside my engine compartment. I have read many reports of other mercedes-benz cars of the…”
“1993 300e 3.2 m104 engine wiring harness disintergrating, wire insulation falls apart entire wiring harness wires even not exposed to heat damaged. Chronic problem all 3 of our mercedes have this problem the 300e the worst. I worked at mercedes and replaced these harness every week. This is very…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1993 Mercedes-Benz 300 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.