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07 Driver support
07
180
The driver will then have to reactivate ACC in one of the following ways:• By pressing
•By accelerating up to at least 3 mph (4 km/h). ACC will then resume followingthe vehicle ahead.
Your vehicle will then resume following the vehicle ahead at the set time interval.
NOTE
ACC can remain active and keep your vehicle at a standstill for up to 4 minutes.After 4 minutes have elapsed, the parkingbrake will be engaged and ACC will go intostandby mode. To reactivate ACC, the driver must release the parking brake (see Parking brake –general information (p. 266)).
Automatic standby mode when ACC changes target vehicles
If the vehicle ahead turns suddenly, there may be a stationary vehicle ahead The following only applies at speeds below approximately 18 mph (30 km/h)
:
If ACC changes target vehicles (the vehicle that the radar sensor has detected) from amoving vehicle to a stationary one, the sys-tem will apply the brakes in your vehicle.
WARNING
At speeds above 18 mph (30 km/h), ACC
will not react to a stationary vehicle and apply the brakes but will instead acceler-ate to the previously set speed. The drivermust actively apply the brakes to stop thevehicle.
ACC disengages and goes into standby mode if:
• Your vehicle's speed goes below 10 mph (15 km/h) and ACC cannot determine ifthe target object is a stationary vehicle orsome other type of object such as e.g., aspeed bump.
• Your vehicle's speed goes below 10 mph(15 km/h) and the vehicle ahead turns sothat ACC no longer has a target vehicle tofollow.
No automatic braking when at a standstill
In certain situations, ACC will no longer apply the brakes and go into standby mode whilethe vehicle is not moving. This means that thedriver will have to apply the brakes. This happens if:
• The driver presses the brake pedal
• The parking brake is activated
• The gear selected is moved to
P, N or R
• The driver presses the
button to put
ACC in standby mode
The parking brake is applied automatically
In certain situations, ACC will apply the park- ing brake in order to continue keeping thevehicle at a standstill. This happens if:
• The driver opens the door or takes off his/her seat belt
• The stability system is put in Sport mode(see Stability system – operation (p. 163))
• ACC has kept the vehicle at a standstillfor more than 2 minutes
• The engine has been switched off
• The brakes have overheated
Related information
•
Adaptive Cruise Control – introduction(p. 172)
07 Driver support
07
223
Lane Keeping Aid (LKA) – limitations
The camera used by LKA has the same limi- tations as the human eye. See The camera’slimitations (p. 205) for more information aboutthe camera's limitations.
NOTE
In certain cases, it may be difficult for LKA to assist the driver correctly. In the follow-ing conditions, it may be preferable to turnLKA off:• Road construction areas
• Winter road conditions
• Poor road surfaces
• A very sporty driving style
• Bad weather conditions with poor visi- bility
WARNING
Hands on the steering wheel
: In order for
LKA to function correctly, the driver's hands have to be on the steering wheel,which LKA monitors steadily. If this is notthe case, the driver will be alerted by a textmessage to actively steer the vehicle. If this is not done, LKA will go into standby mode and will remain disengaged until thedriver begins to actively steer the vehicleagain.
Related information
• Driver Alert System (p. 210)
• Lane Keeping Aid (LKA) – introduction (p. 220)
• Lane Keeping Aid (LKA) – operation(p. 221)
• Lane Keeping Aid (LKA) – symbols andmessages (p. 224)
08 Starting and driving
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251
ShiftlockWhen P has been selected, the transmission
is mechanically blocked in this position. The brake pedal must be depressed and the igni-tion must be in at least mode II (see Ignition
modes (p. 73)) before the gear lever can bemoved from the P position.
WARNING
Always apply the parking brake when the vehicle is parked, particularly when park-ing on a hill. The transmission's P mode
may not be able to keep the vehicle sta-tionary if it is parked on an incline.
Press the control to apply the parking brake, see Parking brake – general information(p. 266).
CAUTION
The vehicle must be stationary when posi- tion P is selected.
Gear indicatorThe gear currently being used is displayed on the rightside of the instrument panel. The " S" symbol turns orange
if Sport mode is being used.
Reverse: position RThe vehicle must be stationary when position R is selected.
Neutral: position NNo gear is engaged and the engine can bestarted with the gear selector in this position.Apply the parking brake if the vehicle is sta-tionary with the gear selector in position N. In
order to move the gear selector from the N
position, the brake pedal must be depressedand the ignition must be in at least mode II.
Drive: position DD is the normal driving position. The car auto-
matically shifts between the various forwardgears, based on the level of acceleration andspeed. The car must be at a standstill whenshifting from position R to position D.
Related information
• Transmission – general information (p. 250)
• Transmission – Geartronic (p. 252)
• Transmission – shiftlock override (p. 254)
• Fuel tank volume – specification and vol-ume (p. 374)
08 Starting and driving
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252* Option/accessory, for more information, see Introduction.
Transmission – Geartronic
Geartronic allows you to manually shift among your vehicle's forward gears. The manualposition ( +S–) can be selected at any time.
Geartronic: manual shifting (+S–)To shift gears manually, move thegear selector to the side from D
toward +S–. The +S– symbol in the
instrument panel will change from
white to orange and the number of the gear
currently being used (
1, 2, 3, etc.) will be dis-
played (see the following illustration) 5
.
• To return to automatic shifting mode from +S–
, move the gear selector to the side
toward D.
Gear shift indicator*
Gear shift indicator in a digital instrument panel* 6This option indicates when to shift up or down to help conserve fuel. A white arrow willappear above or below the number of thecurrent gear to prompt the driver to shift upor down.
While driving
•
If you select the manual shifting position while driving, the gear that was beingused in the Drive position will also initiallybe selected in the manual shifting posi-tion.
• Move the gear selector forward (toward
+)
to shift to a higher gear or rearward(toward –) to shift to a lower gear.
• If you hold the gear selector toward "
–",
the transmission will downshift one gearat a time and will utilize the braking powerof the engine. If the current speed is toohigh for using a lower gear, the downshiftwill not occur until the speed hasdecreased enough to allow the lower gearto be used.
• If you slow to a very low speed, the trans-mission will automatically shift down.
Shiftlock: Neutral (N)If the gear selector is in the
N position and
the vehicle has been stationary for at least 3 seconds (irrespective of whether the engineis running) then the gear selector is locked. In order to move the gear selector from
N to
another gear position, the brake pedal mustbe depressed and the ignition must be in atleast position II, see Ignition modes (p. 73).
5
If Sport mode is being used, the symbol will change to "S".
6 Analog instrument panel: the gear shift indicator is displayed in the center of the speedometer.
08 Starting and driving
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}}
* Option/accessory, for more information, see Introduction.253
Geartronic: steering wheel paddles*In addition to the manual gearshift function using the gear selector, this option makes itpossible to manually shift gears from thesteering wheel.
Steering-wheel mounted gear shift paddles
" – ": Shift down to a lower gear.
"+ ": Shift up to a higher gear.
In order to shift gears with the paddles, they have to first be activated. The gear selector
can be in either the D or S position. Activating the paddles:
• Pull either paddle toward the steering wheel and release it; the
D in the instru-
ment panel will change to the number ofthe gear currently being used.
Shifting gears: •
Pull the paddle toward the steering wheeland release it.
Deactivating the paddles: • Hold the "
+" paddle for approximately
3 seconds.
NOTE
If the gear selector was in D when paddle
shifting was activated ( D changed to the
number of the gear being used), the trans- mission will automatically revert to D after
approximately 5 seconds if the paddlesare not used to shift gears. This will not occur:
• during active driving (e.g., on a wind- ing road, while accelerating, etc)
• if the gear selector was in
S when the
paddles were activated
If the transmission reverts to D, the pad-
dles will have to be reactivated (pull either paddle toward the steering wheel andrelease it) before they can be used to shiftgears again. The paddles can also be manually deacti- vated by pulling both paddles toward thesteering wheel and holding them until thegear number shown in the instrumentpanel changes to D.
Geartronic: Sport mode (S) 7This transmission mode provides sportier shifting characteristics and enables a moreactive driving style by making it possible todrive at higher rpm in each gear before shift-ing up. The engine also responds faster whenthe accelerator pedal is pressed. To access Sport mode from Drive (
D), move
the gear selector to the left. The transmission will not switch to manual shifting mode untilthe gear selector is moved forward or rear-ward toward + or –. Sport mode can be selected any time.
NOTE
• On vehicles equipped with Sport mode, the transmission symbol in themain instrument panel will changefrom
D to S when the gear selector is
moved to the manual shifting mode. Ifthe gear selector is moved toward "+"or "-", the number of the gear currentlybeing used will be displayed, see Infor-mation displays – introduction (p. 62).
• Please be aware that using Sportmode may result in a slight decrease infuel economy. Driving in
D can help
improve fuel economy.
7 Certain models only
08 Starting and driving
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}}
* Option/accessory, for more information, see Introduction.257
Condition/situation
The driver is turning the steering wheel hard.
The road's incline is very steep.
A trailer's electrical system is connected to the vehicle.
The hood has been opened A
.
The transmission has not reached its nor- mal operating temperature.
Atmospheric pressure is below a level equivalent to an altitude of approx. 4,900–8,200 ft (1500–2500 m) above sea level.The actual pressure is also affected by cur-rent weather conditions.
The Adaptive Cruise Control's* Queue Assist feature is activated.
The gear selector is in the SB
or " +/–" posi-
tion.
A Certain engines only
B Sport mode (where applicable)
Related information
• Start/Stop – introduction (p. 255)
• Start/Stop – function (p. 255)
• Start/Stop – settings (p. 258)
• Start/Stop – Auto-start exceptions (p. 257) •
Start/Stop – Hill Start Assist (HSA)(p. 255)
• Start/Stop – symbols and messages(p. 259)
Start/Stop – Auto-start exceptions
In certain situations or conditions, the engine may auto-start
even though the driver is still
pressing the brake pedal, such as if:
Condition/situation
Condensation forms on the windows.
The climate system cannot keep the desired settings in the passenger compart-ment.
Electrical current consumption is tempo- rarily high or the main battery's charge isbelow the minimum level.
The brake pedal is pumped repeatedly.
The hood has been opened A
.
The vehicle begins to move or increases speed slightly (if the engine auto-stoppedbefore the vehicle was at a standstill (seeECO* (p. 260))).
The driver unbuckles his/her seat belt while the gear selector is in the D or N positions.
The steering wheel is turned A
.
||
08 Starting and driving
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258
Condition/situation
The gear selector is moved from D to SB
, R
or " +/–".
The driver's door is opened with the gear selector in D – an audible signal and a text
message will inform the driver thatStart/Stop is active.
A Certain engines only
B Sport mode (where applicable)
WARNING
Do not open the hood if the engine has auto-stopped. The engine could suddenlyauto-start. Before opening the hood:
• Switch off the ignition using the START/STOP ENGINE
button.
• Be aware that if the engine has beenrunning, components in the enginecompartment will be very hot.
If the engine does not auto-start, this could be due to
:
• The driver's seat belt is not fastened
• The gear selector is in
P and the driver's
door is opened
In these cases, the driver will have to restart the engine by pressing the START/STOP
ENGINE button.
Related information
•Start/Stop – introduction (p. 255)
• Start/Stop – function (p. 255)
• Start/Stop – settings (p. 258)
• Start/Stop – Auto-stop exceptions (p. 256)
• Start/Stop – Hill Start Assist (HSA)(p. 255)
• Start/Stop – symbols and messages(p. 259)
Start/Stop – settings
Settings for the Start/Stop function can be
made in the MY CAR menu system.
Related information
• Start/Stop – introduction (p. 255)
• Start/Stop – function (p. 255)
• Start/Stop – Auto-stop exceptions (p. 256)
• Start/Stop – Auto-start exceptions(p. 257)
• Start/Stop – Hill Start Assist (HSA)(p. 255)
• Start/Stop – symbols and messages(p. 259)
||
08 Starting and driving
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278* Option/accessory, for more information, see Introduction.
•
Using the transmission's Sport mode 14
may increase fuel consumption some- what. Use the transmission's Drive ( D)
position as often as possible. For addi-tional information about Sport mode, seeTransmission – Geartronic (p. 252).
• Using the engine's optional Eco func- tion15
can help improve fuel economy. For
additional information, see ECO* (p. 260).
• Do not exceed posted speed limits.
• Avoid carrying unnecessary items (extra load) in the vehicle.
• Maintain correct tire pressure. Check tirepressure regularly (when tires are cold).
• Remove snow tires when threat of snowor ice has ended.
• Note that roof racks, ski racks, etc,increase air resistance and also fuel con-sumption.
• At highway driving speeds, fuel consump-tion will be lower with the air conditioningon and the windows closed than with theair conditioning off and the windowsopen.
• Using the onboard trip computer's fuelconsumption modes can help you learnhow to drive more economically.
Other factors that decrease gas mileage are: •
Dirty air cleaner
• Dirty engine oil and clogged oil filter
• Dragging brakes
• Incorrect front end alignment
Some of the above mentioned items and oth-ers are checked at the standard maintenanceintervals.
WARNING
Driving with the trunk open: Driving with
the trunk open could lead to poisonous exhaust gases entering the passengercompartment. If the trunk must be keptopen for any reason, proceed as follows:
• Close the windows
• Set the ventilation system control to air flow to floor, windshield and side win-dows and the blower control to itshighest setting.
Handling and roadholdingAt the specified curb weight your vehicle has a tendency to understeer, which means thatthe steering wheel has to be turned morethan might seem appropriate for the curva-ture of a bend. This ensures good stabilityand reduces the risk of rear wheel skid.Remember that these properties can alterwith the vehicle load. The heavier the load in the trunk, the less the tendency to under-steer. •
Vehicle load, tire design and inflation pressure all affect vehicle handling.Therefore, check that the tires are inflatedto the recommended pressure accordingto the vehicle load. Loads should be dis-tributed so that capacity weight or maxi-mum permissible axle loads are notexceeded.
• At the specified curb weight your vehiclehas a tendency to understeer, whichmeans that the steering wheel has to beturned more than might seem appropriatefor the curvature of a bend. This ensuresgood stability and reduces the risk of rearwheel skid. Remember that these proper-ties can alter with the vehicle load. Theheavier the load in the trunk, the less thetendency to understeer.
Related information
• Climate – general information (p. 118)
14
Certain models only.
15 Available on certain 4-cyl. engines