2002 Mercedes-Benz Ml-Class
Key Replacement - Save vs Dealer in Ventura County

2002 Mercedes-Benz Ml-Class Remote Head Key Replacement - Fast, Affordable & Professional

Got a call from a guy over in the Windsor North neighborhood in Oxnard. His 2002 ML320 had been sitting in the driveway for three days because his only key stopped working. Key would go into the ignition, turn, engine would crank, but nothing. No start. Dash just sat there.

He had already called the Mercedes dealer. They told him to tow it in, said the EIS module probably needed replacement, and quoted him a timeline that started at "a week, maybe two" before they could even look at it. He didn't have a spare key. His wife had lost hers a year ago and they never replaced it.

I pulled up, connected to the OBD-II port under the dash, and ran diagnostics on the EIS. The module was reading fine. The problem was the transponder in his key. The original Philips crypto transponder had gone intermittent, which happens on these W163 keys after twenty-plus years of pocket wear and temperature cycles.

Cut a new blade on the 5WK47283 blank to match his lock data, programmed the fresh transponder chip through the EIS, and coded the IR remote buttons. Tested all four buttons, cycled the ignition three times, verified the immobilizer cleared on each start.

He sat on his front steps the whole time, watching. When it fired up clean, he just nodded and said "that's it?" That was it. No tow truck, no two-week wait, done in his own driveway for a fraction of what the dealer wanted.

BSIS Licensed

LCO#6792

CA Bureau of Security & Investigative Services

NASTF Certified

National Automotive Service Task Force

Fully Insured

Liability & vehicle damage coverage

Google Guaranteed

Verified & backed by Google