Bendix Commercial Vehicle Systems ABS OPERATORS MANUAL ESP 4/11 - Manual (Page 11)

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• The ABS lamp is also used to indicate the optional off-road ABS mode.
The lamp will flash continually when the vehicle is operating in the off-road
mode. (Note: When the ABS Off-Road mode is engaged, stability functions
are disabled at speeds below 25 mph (40.2 kmh). The ATC/ESP Indicator
lamp will illuminate to indicate that the stability systems are disabled.) See
page 4 of this manual for additional sources of information about the ABS
off-road operating mode.
Trailer ABS Indicator Lamp
The Trailer ABS Indicator Lamp is also dash-mounted.
• All trailers built since March, 2001 are able to communicate with the towing
vehicle and to operate the trailer ABS indicator lamp on the towing vehicle’s
dash. The trailer ABS indicator lamp functions just like the tractor ABS
indicator lamp (on for three seconds after each vehicle ignition, then off
unless a problem develops with the trailer ABS during operation).
• All new trailers built through March 1, 2009 will be equipped with an amber
ABS warning lamp located on the driver’s side near the rear of the trailer.
The operation of the lamp varies depending on how the ABS system is
powered:
(a) Full-time powered ABS (usually obtaining power over the blue line of
the J560 connector): The trailer ABS warning lamp will function just like
the tractor ABS warning lamp, listed above.
(b) Brake-light-only powered ABS: Each time the brakes are applied the
warning lamp will come on for approximately 3 seconds and then turn
off. If the lamp remains on during braking, ABS may not be operating.
The vehicle will retain normal service braking, although without the
benefits of ABS. Have the trailer serviced as soon as possible to restore
ABS operation.
ATC/ESP Indicator Lamp (Optional)
If your vehicle is also equipped with the optional ABS features, ATC or Bendix
®
ESP ®
stability system, a third indicator lamp will be installed on the dash. (The
same lamp is also used to indicate the ATC “Mud/Snow” mode.)
• During the bulb check at vehicle ignition your ATC/ESP indicator lamp will
illuminate for approximately two and a half seconds and then turn off. If
the ATC/ESP indicator lamp does not illuminate at ignition, or if it remains
on steadily (not flashing) after ignition, or if it illuminates steadily (not
flashing) while you are driving (except in off-road mode), the ATC or ESP
system may not be fully functional or their operation may be completely
disabled. If this happens, your vehicle will still have normal service braking
and it still can be driven, although without the benefits of ATC or an ESP
system. Have the vehicle serviced by a qualified mechanic as soon
as possible to restore full ATC/ESP functionality.