Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Start-Off Assist, Basic Function - GF54.65-P-1005A
Model All (CAR)
With Code 235 (Active Parking Assist)
Overview
This document contains information on:
- General
- Function requirements
- Function
- Functional restrictions
General
The starting-off aid can prevent collisions with obstacles in the direction of travel or minimize their effects when starting off. This can easily happen if the accelerator and brake pedal are mixed up or if the wrong direction of travel is assumed. The starting-off aid is controlled using the multimedia system. On vehicles with manual transmission, start-off assistance is not available.
Function requirements
- Engine running or drive train operational.
- Parking Assist switched on and maneuvering assistant function activated in multimedia system.
- No trailer operation (vehicles with trailer hitch).
- No incline detected.
Function
If, when starting off (drive range change to "R" or "D"), an obstacle is detected within an area of approx. 1 m, the speed is limited to approx. 2 km/h.
This helps to minimize the effects of a potential collision. When this process is active, it is indicated by a symbol in the central display.
Functional restrictions
- On inclines and when driving with trailer (vehicles with trailer hitch)
- If sensors are very dirty
- In case of insufficient detection when parking at an angle (limited by position of sensors)
- When covered up by other vehicles
| Function schematics | |||
| Start-off assistance, function schematic | Model 118, 177, 247 with transmission 724, model 167, model 213, 238, 257, 290 with transmission 725 as of model year 2021, model 243 with code MEB2 (Entry variant with M battery), model 293 with code ME01 (Electric engine) | PE54.65-P-2505-97A | |
| Model 223, 297 | PE54.65-P-2505-97B | ||
| Model 192, 206, 214, 232, 236, 254, 294, 295, 296 | PE54.65-P-2505-97C | ||
| Additional basic functions | |||
| Torque coordination, basic function | GF07.10-P-1060A | ||
| Direction of travel selection, basic function | Electric vehicles | GF08.00-P-1002A | |
| Gearshift system, basic function | All models with transmission 725.0/1 | GF27.60-P-1002B | |
| Environment monitoring, basic function | GF54.65-P-1000A |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.