Connecting VAS 5019/1 base unit and interrogating fault memory - Vehicles without camping equipment — VW
Connecting VAS 5019/1 base unit and interrogating fault memory - Vehicles without camping equipment on VW: factory workshop procedure.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
1 -
Base unit VAS 5019/1
2 -
Universal diagnosis cable VAS 5019/3
A-Diagnosis connector,
-blue-
B-Earth connector,
-black-
C-Positive connector,
-red-
D-8-pin connector,
Connector for base unit VAS 5019/1
Test sequence for vehicles with temperature regulating switch -E13-
Notes:
In certain models a combination of temperature regulating switch -E13- and preselector clock -E111- is installed as optional equipment.
As of January 1996 the temperature regulating switch -E13- or combination of temperature regulating switch -E13- and preselector clock -E111- has been replaced by the preselector clock with temperature regulation -E187-.
Vehicles ▸12.95
Carefully lever the temperature regulating switch -E13- out of the dash panel -arrows-.
Pull the temperature regulating switch -E13- out until the -T12- connector is accessible.
Connect to VAS 5019/3 universal diagnosis cable using adapter cables from adapter set V.A.G 1594 A.
Connecting adapter cables to preselector clock -E187-:
First connect connector -A- to connection -T12/5- using a suitable adapter.
Connect connector -B- to connection -T12/1- using a suitable adapter.
Connect connector -C- to connection -T12/11- using a suitable adapter.
Connect universal diagnosis cable VAS 5019/3 to base unit VAS 5019/1.
The switch additional heater on.
Shown on display of VAS 5019/1 base unit after switching unit on:
Press button "D" to display the fault memory as a 3 digit fault code.
Shown on display of VAS 5019/1 base unit after pressing button "D":
The 3-digit fault code is shown on the display of VAS 5019/1.
Press buttons ">" and "<" to see all the fault codes.
Test sequence on vehicles with preselector clock and temperature regulation -E187-
Vehicles 01.96▸
Vehicles ▸08.98
Carefully lever the preselector clock with temperature regulation -E187- out of the dash panel -arrows-.
Connect to VAS 5019/3 universal diagnosis cable using adapter cables from adapter set V.A.G 1594 A.
Pull the preselector clock with temperature regulation -E187- out until the -T8- connector is accessible.
Connecting adapter cables to preselector clock -E187-:
First connect connector -A- to connection -T8/3- using a suitable adapter.
Connect connector -B- to connection -T8/5- using a suitable adapter.
Connect connector -C- to connection -T8/6- using a suitable adapter.
Connect universal diagnosis cable VAS 5019/3 to base unit VAS 5019/1 and then switch the additional air heater on.
Vehicles 09.98▸
Connect adapter cables to 4-pin connector -T4t- under front left seat (connector for self-diagnosis):
First connect connector -A- to connection -T4t/4- using a suitable adapter.
Connect connector -B- to connection -T4t/3- using a suitable adapter.
Connect connector -C- to connection -T4t/1- using a suitable adapter.
Connect universal diagnosis cable VAS 5019/3 to base unit VAS 5019/1 and then switch the additional air heater on.
Shown on display of VAS 5019/1 base unit after switching unit on:
Press button "D" to display the fault memory as a 3 digit fault code.
Shown on display of VAS 5019/1 base unit after pressing button "D":
The 3-digit fault code is shown on the display of VAS 5019/1.
Press buttons ">" and "<" to see all the fault codes.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.