1998 Mercedes-Benz S-Class
Key Replacement - Save vs Dealer in Ventura County
Skip the Dealer Markup | Mobile Service

Dealerships charge a premium because they can. We don't. Same key, same programming, same quality - just without the markup. Call for an honest quote with no hidden fees.

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1998 Mercedes-Benz S-Class
Key Options
Dealer-grade key for a fair, honest price
Mercedes-Benz S-Class: Dealer Markup vs Fair Pricing
Real numbers, real savings on your key
1998 Mercedes-Benz S-Class Remote Head Key Replacement - Fast, Affordable & Professional
Got a call from a guy out near Rincon Beach Park in Ventura. His 1998 S-Class S320 wouldn't turn over. Remote did nothing, key turned in the ignition but the engine just cranked and died. Classic immobilizer lockout.
He had already called the dealer. They told him to tow it in, quoted him a wait time measured in weeks because the EIS module on these W140s is old enough that parts sourcing gets complicated. He said no thanks.
I pulled up, popped the fob open on his hood. The CR2025 was corroded around the edges, and the IR transmitter board looked like it had been swimming. Cleaned the contacts, dropped in a fresh battery, and the remote came back to life. But the no-start was a separate issue.
On the W140, the immobilizer system talks through the EIS (Electronic Ignition Switch, part number 140 545 01 08 on many of these) and the transponder chip in the key head. His transponder signal was weak. I read the EIS, matched the transponder data, and programmed a fresh remote head key with a new chip aligned to his car. Cut the HU64 blade on site.
He sat in a camp chair watching the ocean the whole time. When I handed him two working keys, he just nodded and said, "That's it?" That was it. No tow truck, no weeks of waiting around.
Save vs the Dealer on Your Mercedes-Benz S-Class Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
Mercedes-Benz S-Class Rapid Response, Done Right
Rapid response in the field
Happy Customers, Happy Wallets
Fair pricing that earns five stars
“I needed a second key made for my 2012 Nissan Altima. They arrived quickly, finished in about 15 minutes, and gave me the best price I could find.”
“I lost my key and called EZ Car Keyz. Marco was great. He arrived quickly, explained everything clearly, and kept me informed throughout the entire process. The service was fast, professional, and fairly priced.”
“He arrived within 30 minutes and had everything finished in another 30 minutes for two cars. Everything was programmed and tested perfectly. Cheapest price in town and very honest service.”
Mercedes-Benz S-Class Mobile Service FAQ
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