Bobcat W3236 (32-36) Fault Code: ACS Lift Actuator Fault
Also shown on the panel as 32-36 · Also called ACS (AHC) Lift Actuator
ACS Lift Actuator Fault · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
W3236 (panel code 32-36) sets when the ACS controller commands the lift actuator to move but detects no actual movement. When this fault is active, both lift and tilt functions are disabled until the issue is fixed and power is cycled.
High severity. Lift and tilt are both locked out when this code is active, so the machine cannot perform its main work function. It is not an engine-damage emergency, but it stops productive work and should be diagnosed before returning the machine to service.
What does Bobcat error code W3236 mean?
W3236 is set by the ACS (attachment control system) controller when it sends a command to move the lift actuator, but the feedback it expects to see, actual actuator movement, never happens. The controller treats this as a fault condition rather than let the machine sit in an unknown state.
Because the lift actuator is tied into both lift and tilt hydraulic control, Bobcat disables both functions any time this code is active. This is a safety lockout, not an unrelated glitch: the system does not know if the actuator can be trusted to respond correctly, so it shuts down movement on that circuit.
This code applies across a wide range of skid-steer and track loader models, including the S510 through S770 and T550 through T870 lineups. The underlying cause is almost always mechanical (actuator not moving) or electrical (wiring or connector fault) rather than a software issue.
Common causes of W3236
- Lift actuator not installed properly on the valve
- Binding spool valve preventing actuator movement
- Bad pin joining the actuator to the spool
- Open actuator motor wire, referenced as wire 4680 or 4600, or wire 4690 or 4610 depending on model/harness
- Failed lift actuator
- Failed ACS controller
- Moisture, corrosion, or pushed-back pins in the ACS controller connectors, tilt actuator connectors, or ACS harness
- Intermittent causes that may not be present at time of testing: loose connections, corrosion, pushed-back pins, a marginal controller or harness, or a combination of these
How to troubleshoot Bobcat W3236: first checks
- Confirm the lift actuator is properly and fully installed on the valve, with the linkage pin intact and not worn or missing
- Inspect the spool valve for binding or resistance that would prevent the actuator from moving it freely
- Check the pin joining the actuator to the spool for wear, damage, or disconnection
- Trace and test actuator motor wiring (4680/4600 or 4690/4610, depending on harness) for continuity and look for an open circuit
- Inspect all ACS controller connectors, tilt actuator connectors, and ACS harness connectors for moisture, corrosion, or pins that have pushed back out of the connector body
- If the fault is intermittent and not present during testing, wiggle-test harness connectors and check ground and power connections since the root cause may be a loose or corroded connection rather than a hard failure
How the code clears
Once the mechanical or electrical fault is repaired, clear W3236 by cycling power on the machine (turning the key off and back on). No separate reset procedure or software step is listed for this code.
Affected models and serial ranges
W3236 appears in our records across 16 Bobcat models. Match your machine by model and serial number.
| Model | Serial ranges |
|---|---|
| S510 | SN A3NJ11001-99999, SN A3NK11001-99999, SN ATZC11001-99999 |
| S530 | SN A7TV11001-99999, SN ATZD11001-99999 |
| S550 | SN A3NK11001-A3NL99999, SN A3NM11001-99999 |
| S570 | SN A7U711001-799999, SN A7U811001-899999 |
| S590 | SN ANMN11001-99999, SN ANMP11001-99999 |
| S630 | SN A3NT12370-99999, SN A3NU11001-11111, SN A3NU11112-99999 |
| S650 | SN A3NV11001-13098, SN A3NV13099-99999, SN A3NW11001-11248, SN A3NW11249-99999 |
| S750 | SN A3P211001-299999 |
| S770 | SN A39511001-99999, SN A3P411001-99999 |
| T550 | SN A7UJ11001-AJZV12276 |
| T590 | SN ALJU11001-999999, SN B37811001-999999, SN B3Z711001-999999 |
| T630 | SN A7PU11001-11663, SN A7PU11664-99999 |
| T650 | SN A3P012214-099999, SN A3P111242-199999 |
| T750 | SN ANKA11001-A99999 |
| T770 | SN A3P811001-899999, SN A3P911001-999999 |
| T870 | SN A3PG11001-99999, SN A3PH11001-99999 |
Frequently asked questions
What does Bobcat code W3236 mean?
It means the ACS controller told the lift actuator to move, but the actuator did not move. Because of this, the controller disables both lift and tilt functions until the fault is fixed.
Why are both lift and tilt disabled when I only have a lift actuator problem?
The lift actuator and tilt function share control logic in the ACS system. When the controller cannot confirm the lift actuator responded correctly, it locks out both functions as a precaution rather than risk uncommanded or unpredictable movement.
What is the panel number for W3236?
The numeric panel form of this code is 32-36.
Can a bad connector really cause this code?
Yes. Moisture, corrosion, or pins that have pushed back out of the ACS controller connectors, tilt actuator connectors, or ACS harness are all listed causes, and these can create an intermittent or hard fault that looks like an actuator failure even when the actuator itself is fine.
How do I clear W3236 after making a repair?
Cycle power on the machine. No other reset procedure is listed for this code.
The code isn't showing up now, does that mean it's fixed?
Not necessarily. If the fault is intermittent, it may not be present at the time of testing. Loose connections, corrosion, pushed-back pins, the controller, or the wire harness can all cause intermittent versions of this fault, so a clean test at one moment does not guarantee the wiring or actuator is fully sound.
Which Bobcat models can get code W3236?
It applies to a broad range including S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770 models.