Emergency start function using VAG 1551: Requirements

Customer must prove him/herself to be an authorized vehicle user via vehicle papers and identification.
VAG 1551/1552 scan tool
Secret number available, if not, see "Determining secret number". See LOST KEY PROCEDURE .

Connect VAG 1551 scan tool and initiate OBD of the anti-theft immobilizer using address word "17". See ANTI-THEFT IMMOBILIZER ON BOARD DIAGNOSTIC (OBD), INITIATING .

After control module identification is displayed:

Press --> button.

Indicated on display

Fig 1: V.A.G 1551 Scan Tool Display - Emergency Start Function (1 Of 4)

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Perform login procedure for instrument cluster. See Login Procedure, instrument cluster .

Indicated on display

Fig 2: V.A.G 1551 Scan Tool Display - Emergency Start Function (2 Of 4)

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Press buttons -0- and -6-. This selects "End Output", function 06.

Indicated on display

Fig 3: V.A.G 1551 Scan Tool Display - Emergency Start Function (3 Of 4)

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Press -Q- button to confirm input.

Indicated on display

Fig 4: V.A.G 1551 Scan Tool Display - Emergency Start Function (4 Of 4)

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Leave ignition switched on and start engine.

NOTE: Once the emergency start procedure has been successfully completed, the warning lamp will light constantly and the immobilizer will be switched free:

as long as the engine is running and the ignition key is inserted
for 45 minutes, as long as the ignition key is inserter (engine not running)
for 5 minutes, if ignition key is removed

NOTE:

After three incorrect entries of the secret number, the immobilizer is locked.
It is not possible to make another attempt for 10 minutes. During this time, the ignition must remain constantly switched on. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.
If no buttons or knobs are operated for more than 30 seconds during the input procedure, the emergency start attempt is aborted.
If emergency start attempt is performed successfully, vehicle can be started within 45 minutes with the S-contact closed
With S-contact open, i.e. vehicle key removed, engine can only be started within 5 minutes.