Removing and installing map-controlled engine cooling thermostat F265 — VW
Removing and installing map-controlled engine cooling thermostat F265 on VW: factory workshop procedure for engines BLR, BLY.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Removing and installing
map-controlled engine cooling thermostat
F265
Note
Assembly overview - Coolant distribution housing with thermostat
Chapter
Removing
Anchor
Installing
Anchor
Removing
Note
Before carrying out further work, disconnect battery earth strap. First check whether a coded radio is fitted. Obtain anti-theft code first if necessary.
With ignition switched off, disconnect battery earth wire
Electrical system
Rep. Gr.
27
Disconnecting and connecting battery
.
Remove engine cover if fitted.
Remove poly-V-belt
Chapter
Remove
alternator
C
Electrical system
Rep. Gr.
27
Alternator
.
Vehicles with air conditioner
Pull activated charcoal canister with connected wiring off the bracket upwards
arrow
.
Remove air conditioner compressor from bracket for ancillaries
Heating, Air conditioning system
Rep. Gr.
87
Repair work on refrigerant circuit; Removing and installing air conditioner compressor
and secure to body with wire.
Note
The air conditioner does not need to be opened.
To prevent damage to condenser or to refrigerant lines and hoses, ensure that lines and hoses are not stretched, kinked or bent.
Continuation for all models
Drain off coolant
Chapter
Detach coolant hose
2
from coolant distribution housing. To do this pull out retaining clip
1
.
Remove ancillaries bracket, bolts
1...6
.
Disconnect connector
1
and remove
map-controlled engine cooling thermostat
F265
arrows
.
Installing
Installation is carried out in the reverse order. In the process, note the following:
Renew O-ring.
Clean or smooth sealing surface for O-ring.
Moisten new O-ring with coolant.
Install
map-controlled engine cooling thermostat
F265
arrows
on cylinder block and evenly tighten bolts to 15 Nm.
Reconnect coolant hose
2
, retaining clip
1
must engage.
Install bracket for accessories. Observe tightening sequence
Fig.
Vehicles with air conditioner
Install air conditioner compressor
Heating, Air conditioning system
Rep. Gr.
87
Repair work on refrigerant circuit; Removing and installing air conditioner compressor
.
Continuation for all models
Install
alternator
C
Electrical system
Rep. Gr.
27
Alternator
.
Note
To fit the
alternator
easier drive threaded sleeves for locking screw on the
alternator
back slightly.
Install poly-V-belt
Chapter
Fill coolant system with coolant
Chapter
Observe required procedures after connecting battery
Electrical system
Rep. Gr.
27
Connecting and disconnecting battery
.
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.
Ask about my car →Other VW procedures
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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.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.