Mercedes W220 EIS failure — W220 S-Class EIS authentication failure
Mercedes diagnostic code. Below: what it means, common causes, symptoms, and the exact bench-programming fix path.
Common causes
- •Aged EIS hardware
- •Key transponder pairing lost
- •EIS internal cap failure
Symptoms you'll see
- •Crank-no-start
- •Cluster dark or partial
- •Sometimes key not recognized
The fix path
Mercedes EIS Cloning ($250) supports W220 pre-NEC EIS. Send EIS + at least one working key (or all if AKL).
AML services that fix this
Mail in the affected module, we bench-program, typically ship back next business day. Flat pricing, flat-rate return shipping at checkout.
Mercedes EIS Cloning (Pre-2014)
$250Failed Mercedes EIS leaving you with a car that won't start? We clone it to a replacement EIS — your existing keys keep working, no re-keying the car.
Service detailsMercedes Key Replacement via EIS
$150Lost your only Mercedes key? Ship us your EIS — we program a fresh working key directly on the bench.
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Related diagnostic codes
U0001High Speed CAN Communication Bus ErrorSteering lock faultMercedes Electronic Steering Lock (ELV) failureEIS not reading keyMercedes EIS fails to authenticate inserted keyCrank-no-startEngine cranks normally but won't startAll keys lostNo working key for a European vehicleP164BEngine Stop Detected — Immobilizer ActivatedNot sure which service applies?
Text us your year/make/model + which scanner caught the code — we'll tell you exactly which module to ship and which service to pick.