Are combined acceleration sensor and longitudinal-/lateral acceleration sensor the same thing?

Yes. "Combined Acceleration Sensor" and "Longitudinal-/lateral acceleration sensor" refer to the same car part. Other common names include Longitudinal-/lateral acceleration sensor, Sensor, longitudinal-/lateral acceleration, G-Sensor. The part is the same regardless of which name is used.

Can I clear the ESP light by disconnecting the battery?

No — the fault will return as soon as the system runs. Diagnostic-tool calibration is required after sensor replacement to set the zero-point reference and clear codes permanently.

Why did the ESP light come on after a wheel alignment?

Wheel alignment can disturb the steering angle reference. The combined acceleration sensor relies on this for cross-checking, so a short calibration in the diagnostic tool is required after alignment work on most modern vehicles.

Is the combined acceleration sensor the same as the yaw rate sensor?

On modern systems they are usually combined into one housing, but some older vehicles use separate yaw and G-force sensors. Always check the parts catalogue against the chassis number.

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Combined Acceleration Sensor buying guide — what to know before you buy

The combined acceleration sensor measures longitudinal and lateral G-force as well as yaw rate. It feeds data to the ABS, ESP, and stability control modules so the system can detect skids, slope changes, and rollover risk. A fault disables ESP and may also trigger ABS warnings.

When to replace

Replacement is usually triggered by stored fault codes rather than visible damage. The sensor is solid-state and has no mechanical wear under normal use.

ESP and ABS warning lights illuminated together
Fault codes referencing G-sensor, yaw sensor, or lateral acceleration
Stability control disengaging unexpectedly during cornering
Hill-hold function failing intermittently
Damage to the sensor mounting after a collision or transmission tunnel impact

What to look for when buying

The combined sensor is matched to the ESP control unit. Calibration is mandatory after replacement to set the zero-point reference.

Match the part number exactly — sensors are coded to specific ESP variants
Many sensors are bolted to the centre tunnel under the gear lever
Some include a built-in steering angle reference — others are separate
Calibration requires a diagnostic tool capable of writing to the ESP module
Mounting orientation is critical — fitting the sensor rotated 90° causes false fault codes

Common failure modes

Sensor faults are rarely mechanical, but environmental and electrical conditions cause issues.

Internal MEMS element drift over time, producing zero-point errors
Connector corrosion or pin damage causing intermittent signal loss
Software-side incompatibility after ESP module replacement
Loose mounting bolt allowing the sensor to vibrate independently of the chassis
Damage from spilled liquids reaching the centre console area

Related parts to check together

Several other inputs feed the same ESP module, and faults often appear together.

Wheel speed sensors — verify all four are reporting correctly
ABS control unit — check for software updates or stored faults
Yaw rate sensor — sometimes packaged separately on older systems
Steering angle sensor — ESP relies on this for input direction reference

METZGER AUTOTEILEMETZGER AUTOTEILE 09001442 Combined Acceleration Sensor

MPN 090014420094

£72.99In stock

Combined Acceleration Sensor buying guide — what to know before you buy

When to replace

What to look for when buying

Common failure modes

Related parts to check together

Frequently Asked Questions

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