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Additional assistants (EA, TJA, ECU 44)

Coding guides for MQB-Evo beyond basic Travel Assist.
Hardware retrofits (radar, camera, steering wheel) — see MQB / Addons for similar logic; this page covers coding when hardware is already fitted.

Writes to A5, 44, 13 require SFD; on 2024+ vehicles — SFD2 per operation. See SFD.

Emergency Assist

EA stops the car with hazard lights if the driver does not respond (no KLR / hands off for too long).

Enable EA (with ACC + A5 fitted)

SFD: yes

Login code: 20103
Block A5 → Coding:
- Emergency_assist_variante: EA_Variante_2
→ Apply
Login code: 20103
Block 13 → Coding:
- Emergency_assist: activated
→ Apply

For Travel Assist these channels are often set together — see Travel Assist.
The no-KLR workaround (disabling EA) is there too — temporary use only.

Traffic Jam Assist

TJA = ACC + adaptive Lane Assist at low speed (typically up to ~60 km/h). Requires ACC (13), A5 camera, and matching firmware/parameters.

On Evo the camera is 5WA 980 653 — different SW line than MFK⅔ on classic MQB. Parameters from MQB / camAssistFirmwares do not apply without verification.

Typical A5 channels

SFD: yes

Login code: 20103
Block A5 → Coding:
- HC_Variante: Hc_variante_2
- HC_point_of_intervention: early_setting_over_menu
- Traffic_jam_assist: activated
→ Apply

ECU 13 — front camera fitted

SFD: no (on some SW)

Login code: 20103
Block 13 → Coding:
- Front_camera: installed
→ Apply

SFD: yes

Login code: 19249
Block 44 → Coding:
- Heading_control_assist: activated
→ Apply

Head unit menu (5F)

Login code: 20103
Block 5F → Adaptation:
Car_Function_List_BAP_Gen2:
- LDW_HCA_0x19: activated
Car_Function_Adaptations_Gen2:
- menu_display_Lane_Departure_Warning: activated
→ Apply

Full set for classic MQB (3Q0 + parameters) — MQB / 3Q0_assistants. On Evo verify each channel exists.

ECU 44 — steering assist

Used for Travel Assist, TJA, Auto Lane Change:

Channel Purpose
Heading_control_assist Lane Assist / TJA via power steering
Qfk_ma_function Auto Lane Change (see Travel Assist)

SFD: yes

Login code: 19249
Block 44 → Coding:
- Heading_control_assist: activated
→ Apply

Login 19249 is typical for ECU 44; confirm in ODIS for your SW.

Travel Assist 2024+ (V2X, Golf 8.5, T-Roc FL)

From ~2024 MY VW extended Travel Assist:

  • V2X / swarm data — lane keeping with one line marking when swarm or lead vehicle data is available
  • Assisted lane change on highways (see Auto Lane Change)
  • Corner ahead speed hint (navigation dependent)

There is usually no single «V2X: on» channel in ODIS — the feature comes from SW bundle 19 + A5 + 13 + navigation + IQ.DRIVE PR codes.
After SW updates verify Travel Assist and Side Assist in the menu; code only if channels were «not coded».

After OTA / dealer update

  1. SW versions 19, A5, 13 — meet model recommendations.
  2. Channels Travel_Assist, KLR_installed in 13 — see Travel Assist.
  3. Capacitive steering wheel (KLR) for full TA (not the workaround).
  4. On 2024+ — SFD2 for any write.

See also

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