Refer to the following chart for information regarding the
factory-equipped trailer tow connector:
Trailer tow connector
ColorFunction Comment
1. Dark Green Trailer right-hand turn signal Circuit activated when brake
pedal is depressed or when
ignition is on and right-hand
turn signal is applied.
2. Yellow Trailer left-hand turn signal Circuit activated when brake
pedal is depressed or when
ignition is on and left-hand
turn signal is applied.
3. Tan/White Tail lamp Relay controlled circuit
activated when the park
lamps/headlamps are on.
4. White Ground Matching vehicle circuit
returns to battery’s negative
ground.
Driving while you tow
When towing a trailer:
•
Keep your speed no faster than 70 mph (112 km/h) during the first 500
miles (800 km) of towing a trailer, and don’t make full throttle starts.
• Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
• Consult your local motor vehicle speed regulations for towing a trailer.
• To eliminate excessive shifting, use a lower gear. This will also assist
in transmission cooling. (For additional information, refer to the
Driving with a 5–speed automatic transmission section in the
Driving chapter.)
•
Under extreme conditions with large frontal trailers, high outside
temperatures and highway speeds, the coolant gauge may indicate
higher than normal coolant temperatures. If this occurs, reduce speed
until the coolant temperature returns to the normal range. Refer to
Engine coolant temperature gauge in theInstrument Cluster chapter.
•Anticipate stops and brake gradually.
• Do not exceed the GCWR rating or transmission damage may occur.
2007 B-Series (mbs)
Owners Guide (post-2002-fmt)
USA (fus)
Tires, Wheels and Loading
145
Preparing your vehicle
When the battery is disconnected or a new battery is installed, the
transmission must relearn its shift strategy. As a result, the transmission
may have firm and/or soft shifts. This operation is considered normal and
will not affect function or durability of the transmission. Over time, the
adaptive learning process will fully update transmission operation.1. Use only a 12–volt supply to start your vehicle.
2. Do not disconnect the battery of the disabled vehicle as this could damage the vehicle’s electrical system.
3. Park the booster vehicle close to the hood of the disabled vehicle making sure the two vehicles do nottouch. Set the parking brake on
both vehicles and stay clear of the engine cooling fan and other
moving parts.
4. Check all battery terminals and remove any excessive corrosion before you attach the battery cables. Ensure that vent caps are tight
and level.
5. Turn the heater fan on in both vehicles to protect any electrical surges. Turn all other accessories off.
Connecting the jumper cables
1. Connect the positive (+) jumper cable to the positive (+) terminal of the discharged battery.
Note: In the illustrations, lightning boltsare used to designate the
assisting (boosting) battery.
+–+–
2007 B-Series (mbs)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
192
