Standard Ignition ALS396 rear ABS wheel speed sensor for the 2009-2012 Mercedes-Benz SL63 AMG and other vehicles reads how fast the wheel turns and sends that signal to the ABS module. The Standard Ignition ABS wheel speed sensor is engineered specifically for Mercedes-Benz vehicles.
A failing wheel speed sensor can show up as an ABS warning light, a traction control light or an ABS that stops working. Those signs alone do not prove the sensor is the problem, because a damaged tone ring can set the same light.
The 2009-2012 Mercedes-Benz SL63 AMG, the 2007-2012 Mercedes-Benz SL550 and the 2003-2011 Mercedes-Benz SL600 are among the vehicles that fit this sensor. This listing is one sensor, and the quantity varies by vehicle; the 2007-2012 Mercedes-Benz SL550 takes two, one on each side of the rear axle. If your car is not named here, look it up in the "Vehicles it fits" section.
Fit and size
Build and materials
One ABS wheel speed sensor with its harness. Mounting hardware is not included; plan on new hardware, since the old pieces may not be reusable.
Does the Standard Ignition ALS396 fit the 2009-2012 Mercedes-Benz SL63 AMG?
Yes, Standard Ignition ALS396 fits the 2009-2012 Mercedes-Benz SL63 AMG. It fits other vehicles too, so look up your own car in the "Vehicles it fits" section.
Does the ALS396 sensor come with a mounting bolt?
No. Standard Ignition ALS396 does not include mounting hardware, so plan on new hardware. The harness does carry grommets and wire clips for mounting and routing.
How long is the harness on this ABS wheel speed sensor?
The harness is 37 inches (940 mm) long. It ends in one oval female connector with two male pin terminals.
Can I keep driving with a wheel speed sensor that may be failing?
Have the car checked or the sensor replaced promptly, since a faulty wheel speed sensor can disable the ABS. A shop can test the sensor and its wiring.
Is this ABS wheel speed sensor tested on vehicles?
Yes. It is tested on vehicles for proper fit and correct integration with electronic safety systems, and its connector is sealed against harsh conditions.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
