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VMax calibration — speed limiter

Mercedes Interface New Special Functions Advanced ⏱ 5–10 min 4 steps

Handles the speed limiter through the ECU and the CPC. Here too the CPC has preset values that represent the maximum achievable (e.g. C217 C63 AMG 5.5 biturbo de-restricted up to 310 km/h; facelift 4.0 biturbo up to 300 km/h, against the 251 km/h stock limit).

Required licences

  • Licenza Mercedes Online

Hardware / cables

  • AVDI
  • Cavo OBDII
⚠ WarningThe CPC has preset maximum values that cannot be exceeded. The changes have to be made both in the ECU (Smart Functions) and, where needed, in the CPC_NG.

Procedure

  1. Go to the diagnostic screen and run a Scan.
  2. Enter the ECU.
  3. Open the "Smart Functions" menu and set the limit values.
  4. If required, apply the changes in the CPC unit (CPC_NG) as well.

Reference screenshots

VMax calibration — speed limiter — 1VMax calibration — speed limiter — 2
Source: Manuale Mercedes Online, cap. 11 (p.40–41) · ⏱ estimated time 5–10 min
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