Readiness code, generating: Procedure

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The following operating condition must be met during this road test:

Coolant temperature must reach at least 80 °C, see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 5, Coolant temperature.

Observe the safety precautions that apply to road tests. See SAFETY PRECAUTIONS .

Let vehicle cool off with the ignition switched off until the following condition is met:

Coolant temperature approx. intake air temperature (5 to 35 °C). See DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 5, Coolant temperature.

Perform a road test anew.
The following operating conditions must be met during this road test:
Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).

Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.

NOTE:

Vehicle speed, see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 13, Vehicle speed.
Engine speed, see DIAGNOSTIC MODE 1: CHECK MEASURED VALUES ; PID 12, engine rotations per minute (RPM).

After 10 minutes, downshift until an engine speed of 2800 to 3500 RPM has been reached.
Drive in deceleration mode at a speed up to approx. 1800 RPM.
Park vehicle and let engine run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
Perform a road test anew.

The following operating conditions must be met during this road test:

Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).
Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.
Park vehicle and let engine run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
Read readiness code, see READ READINESS CODE .
If a 1 is displayed instead of a 0 in the 8-digit number block:
Perform a road test anew.
The following operating conditions must be met during this road test:
Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.

In 8-digit number block:

a 1 instead of 0 is displayed: