Mariner 4WD L4-2.5L (2010)
Seat Belt Retractor: Description and Operation
Safety Belt System
WARNING: After any crash, all of the following safety belt assemblies and attaching hardware must be inspected by an authorized dealer to
verify correct function:
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Retractors
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Buckles
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Belt tension sensor (BTS) (if equipped)
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Front safety belt buckle support assemblies (slide bar) (if equipped)
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Safety belt shoulder belt height adjusters (if equipped)
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Child safety seat tether bracket assemblies
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Automatic locking retractor (ALR) feature for child safety seats (passenger seating positions only)
If any safety belt assembly is damaged, does not operate correctly or does not pass all of the Functional Tests in the Diagnosis and Testing, a
new safety belt assembly must be installed. If any safety belt assembly attaching areas are damaged or distorted, the sheet metal must be
restored to its original structural integrity and new safety belt assembly and attaching hardware must be installed. Failure to install new safety
belt assemblies and attaching hardware may increase the risk of serious personal injury or death in a crash.
After any crash that results in deployment of the driver and/or front outboard passenger safety belt pretensioners, new driver and/or front
outboard passenger safety belt systems (including retractors, buckles and height adjusters) must be installed. Failure to install new safety belt
systems increases the risk of serious personal injury or death in a crash.
When replacing safety belt buckles and/or retractor assemblies, use only the replacement parts specified in the Ford Catalog Advantage(TM) or
equivalent.
Safety Belt Retractors
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Safety belt retractors with pretensioners (front only)
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Dual locking mode
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Emergency Locking Retractor (ELR)
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Automatic Locking Retractor (ALR) (all except driver seat)
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BTS (front passenger only)
Automatic Locking Retractor (ALR)
The ALR mode is used when locking a child seat in an outboard seating position. The ALR mode is automatically activated when the safety belt webbing
is fully extracted from the retractor and then allowed to retract. As the safety belt webbing is retracted back onto the spool, an audible clicking sound is
made indicating the safety belt retractor is in ALR mode and the safety belt webbing will not pull back out of the safety belt retractor. To disengage the
ALR mode, allow the safety belt webbing to fully retract back onto the spool. For testing, refer to the appropriate Functional Test procedure in Safety
Belt System See: Testing and Inspection/Component Tests and General Diagnostics.
Emergency Locking Retractor (ELR)
The ELR is a vehicle-sensitive feature designed to activate and lock the safety belt webbing during braking hard, cornering hard or in an impact of
approximately 24 km/h (15 mph). The ELR feature helps to reduce the forward movement of the driver and passengers. For testing, refer to the
appropriate Functional Test procedure in Safety Belt System See: Testing and Inspection/Component Tests and General Diagnostics.
Belt Tension Sensor (BTS)
The BTS operates as part of the Occupant Classification Sensor (OCS) system on the front passenger seat. To diagnose the BTS, refer to Restraint
Systems.
