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Mercedes-Benz A 220

Orientation parameters

The Mercedes-Benz A 220 has 7 orientation parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Lateral acceleration MERCEDES_LAT_ACCConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Example reply from a 2021 Mercedes-Benz A 220.

Bits 24 to 39 of the reply, 16 bits. The value is signed.

0xFFFC = -4 → (-4 × 15.625 ÷ 1000) = -0.0625 g

Formula
(val × 15.625 ÷ 1000)
Range
-512 to 511 g
Unit
g

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Lateral acceleration MERCEDES_LAT_ACCConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Example reply from a 2021 Mercedes-Benz A 220.

Bits 24 to 39 of the reply, 16 bits. The value is signed.

0xFFFC = -4 → (-4 × 15.625 ÷ 1000) = -0.0625 g

Formula
(val × 15.625 ÷ 1000)
Range
-512 to 511 g
Unit
g

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

Lateral acceleration MERCEDES_LAT_GConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Bits 24 to 39 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 627.6)
Range
-52.21 to 52.21 g
Unit
g

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

Longitudinal acceleration MERCEDES_LNG_GConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Bits 8 to 23 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 192747)
Range
-0.17 to 0.17 g
Unit
g

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

Longitudinal acceleration MERCEDES_LON_ACCConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Example reply from a 2021 Mercedes-Benz A 220.

Bits 8 to 23 of the reply, 16 bits. The value is signed.

0x0700 = 1792 → (1792 × 0.05 ÷ 1000) = 0.0896 g

Formula
(val × 0.05 ÷ 1000)
Range
-1.63 to 1.63 g
Unit
g

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

Master break cylinder pressure MERCEDES_MCYL_BREAKConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Bits 96 to 111 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 65.35883831)
Range
-501.34 to 501.34 bar
Unit
bar

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

Vaccuum cylinder pressure MERCEDES_VACC_BREAKConfirmed

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Example reply from a 2021 Mercedes-Benz A 220.

Bits 144 to 159 of the reply, 16 bits. The value is signed.

0xFC0A = -1014 → (-1014 ÷ 1000) = -1.014 bar

Formula
(val ÷ 1000)
Range
-32 to 32 bar
Unit
bar

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

Yaw rate MERCEDES_YAW_RATEConfirmed

The angular velocity of the car around its vertical axis. Indicates how quickly the car is rotating to its left or right.

  • Request22 20 02
  • Service 22DID 2002
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

Bits 48 to 63 of the reply, 16 bits. The value is signed.

Formula
(val × 2 ÷ 32767)
Range
-2 to 2 rad
Unit
rad

Confirmed for 2021. In testing for 2018 to 2020, 2022 to 2026.

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