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Nie, dziękuję Przekieruj mnie tamMy daf xf105 has fault code central vehicle controller and air bag are not inflating ,suspension remote is not coming on
Your DAF XF105 most likely has one electrical/control fault affecting the ECAS air suspension system and its communication/power supply, not three separate failures. If the suspension remote does not power up, and the suspension air bellows (“air bags”) do not inflate, the first suspects are: ECAS fuse/power loss, bad ground, damaged remote cable/socket, damaged wiring loom, or CAN/data-link communication loss between the suspension ECU and the central vehicle controller/gateway. This is a more likely explanation than all suspension air bags failing mechanically at the same time. (wabco-customercentre.com)
First checks:
If you can send the exact fault code number from the dash or diagnostic tool, I can narrow it down much more precisely.
I am assuming that by “air bag” you mean the air suspension bellows / air springs, not the steering-wheel SRS airbag. Given your symptoms, that is the most consistent interpretation because the suspension remote is part of the ECAS ride-height system. The official XF105 emergency guide states that the vehicle height is operated by a remote control unit near the driver’s seat, and WABCO’s ECAS documentation shows that the ECU receives remote inputs and controls pressure in the air springs via solenoid valves. (daf.com)
In ECAS, the electronic control unit:
Because of that architecture, the combination of:
strongly suggests one of these root causes, in order of probability:
| Likely cause | Why it fits your symptoms |
|---|---|
| Loss of ECAS power or ground | A dead ECU will not power/respond to the remote and will not drive the suspension valves. WABCO explicitly lists loss of power as a cause to check before replacing the ECU. (wabco-customercentre.com) |
| Broken remote cable or socket | The remote is connected to the ECU by a coiled cable and vehicle socket; if open-circuit, the remote can appear dead or not command suspension movement. (wabco-customercentre.com) |
| CAN/data-link communication fault | The ECAS ECU is linked to the vehicle communication datalink; if the central controller cannot see ECAS, you can get a controller fault and suspension functions may be restricted. (wabco-customercentre.com) |
| ECAS ECU fault | If power/ground and wiring are correct but there is no ECU response, internal ECU fault becomes likely. WABCO fault logic includes ECU program/data/RAM/valve-relay faults. (wabco-customercentre.com) |
| ABS-related fault affecting ECAS | WABCO states ECAS function can be restricted by ABS faults because of system interaction. (wabco-customercentre.com) |
| Pure pneumatic leak only | Less likely, because a large air leak would not normally also make the remote nonfunctional. |
Case A: remote is completely dead / no lights / no display
Case B: remote powers up but suspension still does not raise
Ignition ON and full air pressure available.
On XF105, the remote is only functional with ignition on. (daf.com)
Check if the remote is physically alive.
Unplug and inspect the remote connector and the vehicle socket. The remote is ECU-connected through a coiled cable and socket, so these are simple high-value checks. (wabco-customercentre.com)
Check ECAS/CVC power and grounds.
Use a meter, not just visual fuse inspection. Measure power on both sides of the fuse and verify good ground under load. WABCO specifically notes that loss of power must be ruled out before ECU replacement. (wabco-customercentre.com)
Scan the vehicle with a DAF-compatible diagnostic tool.
Read faults from the central controller and from ECAS. The ECAS ECU stores faults and can be interrogated by a diagnostic controller/software. (wabco-customercentre.com)
Check for ABS faults too.
WABCO states ABS faults can restrict ECAS functionality, so do not ignore them. (wabco-customercentre.com)
If no scan tool is available, check whether your ECAS version supports blink-code retrieval.
WABCO ECAS systems can output stored faults via the fault lamp and STOP switch procedure. (wabco-customercentre.com)
Current OEM and tier-1 documentation reflects that air suspension on heavy trucks is not a standalone pneumatic device; it is an integrated electro-pneumatic system. DAF’s XF105 guide describes operator control through the seat-side remote, while WABCO describes ECU-based control using sensors, valves, remote input, and vehicle datalink communication. In practice, this means a single electrical or network fault can disable height control, remote response, and generate a central controller complaint at the same time. (daf.com)
Another relevant point is that diagnosis is increasingly VIN-specific. DAF currently provides vehicle-specific driver manuals by entering the last 8 VIN characters, which is useful for confirming configuration-dependent items such as equipment fitment and control layout. (daf.com)
Think of the system as three layers:
Pneumatic layer
Air tanks, supply lines, valve block, air springs.
Electronic layer
ECAS ECU, height sensors, remote control, power/ground.
Network/control layer
Central controller/gateway, ABS/ATC interaction, vehicle datalink. (wabco-customercentre.com)
If the pneumatic layer only failed, you would usually still have a living remote and an ECU trying to act.
If the electronic/network layer failed, you get exactly the kind of combined symptoms you described. This is an engineering inference from the official system architecture. (wabco-customercentre.com)
A useful distinction:
From a safety standpoint, do not work under the vehicle supported only by the air suspension. WABCO’s service documentation explicitly warns to park on level ground, block the wheels, and support the vehicle with safety stands rather than relying on jacks or unstable support. (wabco-customercentre.com)
If by “air bag” you actually mean the driver SRS airbag, treat that as a separate pyrotechnic safety system. DAF’s XF105 guidance states that before any work on the airbag system you must switch off ignition, turn off the main switch, disconnect the negative battery pole, and wait at least 30 seconds; it also warns never to disconnect airbag/tensioner connectors while the control unit is energized. (daf.com)
Do not replace the ECAS ECU first. Check power, ground, and wiring first. WABCO documentation explicitly emphasizes checking correct voltage before replacing the ECU. (wabco-customercentre.com)
Please send these details:
With that information, I can turn this into a much more exact step-by-step diagnosis.
Most likely, your XF105 has a shared ECAS electrical or communication problem: fuse/power loss, bad ground, damaged remote/socket wiring, loom damage, or ECU/network failure. Because the remote, ECU, and suspension valve control are all tied together, one fault can produce all the symptoms you reported. Start with ignition on, air pressure up, remote/socket check, fuses, ECU power/ground, and a diagnostic scan. (daf.com)
If you want, send me the fault code number and I will give you the next exact test points.
