08 Starting and driving
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Gear selector inhibitor
There are two different types of gear selector inhibitor - mechanical and automatic.
Mechanical gear selector inhibitor
G021351
The gear selector can be moved forward and back freely between N and D. Other positions
are locked with a latch that is released withthe inhibitor button on the gear selector. With the inhibitor button depressed the lever can be moved forwards or backwardsbetween P, R , N and D.
Automatic gear selector inhibitorThe automatic gearbox has special safetysystems: Parking position (P) Stationary car with engine running: •
Keep your foot on the brake pedal when moving the gear selector to another posi-tion.
Electric gear inhibitor – Shiftlock
Parking position (P)
To be able to move the gear selector from P
to other gear positions, the brake pedal must be depressed and the remote control keymust be in key position II (p. 70).
Shiftlock – Neutral (N)If the gear selector is in N position and the
car has been stationary for at least 3 seconds(irrespective of whether the engine is running)then the gear selector is locked. To be able to move the gear selector from N
to other gear positions, the brake pedal must be depressed and the remote control keymust be in key position II.
Deactivate automatic gear selector inhibitor
If the car cannot be driven, e.g. due to a flat battery, the gear selector must be movedfrom the P position so that the car can be
moved.
Lift the rubber mat in the compartment behind the centre console and locate a hole 11
for the key blade (p. 155) in the
bottom of the compartment.
Search for a spring-loaded button down in the hole with the key blade; depressthe button with the blade and hold.
Move the gear selector from the P posi-
tion and pull up the key blade.
4. Set the rubber mat back in place.
11 There may be 2 holes - one for the key blade and one that fixes the rubber mat.
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08 Starting and driving
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280* Option/accessory, for more information, see Introduction.
The Start/Stop function gives the driver the opportunity for a more active environmentallyconscious way of driving the car by means ofbeing able to allow the engine to stop auto-matically, whenever appropriate. Manual or Automatic Note that there are differences in the Start/Stop function depending on whether thegearbox is manual or automatic.
Related information
• Start/Stop* - function and operation (p. 280)
• Starting the engine (p. 264)
• Start/Stop* - settings (p. 285)
• Start/Stop* - the engine does not auto-start (p. 284)
• Start/Stop* - the engine auto-starts (p.283)
• Start/Stop* - the engine does not stop (p.282)
• Start/Stop* - involuntary engine stoppagemanual gearbox (p. 284)
• Start/Stop* - symbols and messages (p.286)
• Battery - Start/Stop (p. 365)
Start/Stop* - function and operation
Some engine and gearbox combinations are equipped with a Start/Stop function whichengages in the event of e.g. stationary trafficor waiting at traffic lights. The Start/Stopfunction is activated automatically when theengine is started with the key.
The Start/Stop function isactivated automatically whenthe engine is started with thekey. The driver is madeaware of this by the func-tion's symbol illuminating inthe combined instrumentpanel and the On/Off buttonlamp illuminating. All of the car's normal sys-
tems such as lighting, radio, etc. work as nor- mal even with an engine that has stoppedautomatically, except that some equipmentmay have the function temporarily reduced,e.g. the climate control system's fan speed orextremely high volume on the audio system.
Engine auto-stopThe following is required for the engine to auto-stop:
ConditionsM/A A
Declutch, set the gear lever in neu- tral position and release the clutchpedal - the engine stops automati-cally.M
Stop the car with the foot brake, and then keep your foot on thepedal - the engine auto-stops.A
AM = Manual gearbox, A = Automatic gearbox.
If the ECO function is acti- vated then the engine mayauto-stop before the car iscompletely stationary.
As verification and reminder that the engine is auto-stopped the com-bined instrument panel's symbol forthe Start/Stop function illuminates.
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08 Starting and driving
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* Option/accessory, for more information, see Introduction.281
Engine auto-start
ConditionsM/
A A
With the gear lever in neutral posi- tion:
1. Depress the clutch pedal or
press the accelerator pedal - the engine starts.
2. Engage a suitable gear and drive.M
Release the foot pressure on the foot brake - the engine auto-startsand the journey can continue.A
Maintain foot pressure on the foot brake and depress the acceleratorpedal - the engine auto-starts.A
The following option is also availa- ble on a downhill gradient: Release the foot brake and let the car move off - the engine startsautomatically when the speedexceeds normal walking pace.M +
A
A M = Manual gearbox, A = Automatic gearbox.
Deactivate the Start/Stop functionIn certain situations, it may advisable to temporarilyswitch off the automaticStart/Stop function - this iscarried out with a push ofthis button.
Disengaged function is indicated by the combined instrument panel'sStart/Stop symbol and the On/Offbutton's lamp extinguishing.
The Start/Stop function is disengaged until it is reactivated with the button or until the nexttime the engine is started with the key.
Start assistance HSAThe foot brake can also be released on anuphill slope to auto-start the engine - the HSA(p. 279) (Hill Start Assist) function preventsthe car from rolling backwards. HSA means that the pressure in the brake system remains temporarily available whilethe driver moves his/her foot from the brakepedal to the accelerator pedal for driving offwith the engine having stopped automatically.The temporary braking effect releases after afew seconds or when the driver depressesthe accelerator pedal.
Related information
• Start/Stop* (p. 279)
• Starting the engine (p. 264) •
Start/Stop* - settings (p. 285)
• Start/Stop* - the engine does not auto- start (p. 284)
• Start/Stop* - the engine auto-starts (p.283)
• Start/Stop* - the engine does not stop (p.282)
• Start/Stop* - involuntary engine stoppagemanual gearbox (p. 284)
• Start/Stop* - symbols and messages (p.286)
• Battery - Start/Stop (p. 365)
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08 Starting and driving
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282* Option/accessory, for more information, see Introduction.
Start/Stop* - the engine does not stop
Some engine and gearbox combinations are equipped with a Start/Stop function whichengages in the event of e.g. stationary trafficor waiting at traffic lights. Although theStart/Stop function is activated, the enginedoes not always stop automatically. The engine does not auto-stop if:
ConditionsM/A A
the car has not first reached approx. 8 km/h after a key start orthe last auto-stop.M + A
the driver has unbuckled the seat- belt.M + A
battery capacity is below the mini- mum permitted level.M + A
the engine does not have normal operating temperature.M + A
outside temperature is below freezing point or aboveapprox. 30 °C.M + A
the windscreen's electric heating is activated.M + A
ConditionsM/AA
the environment in the passenger compartment deviates from thepreset values - indicated by theventilation fan running at a highspeed.M + A
the car is reversed.M + A
the starter battery temperature is below the freezing point or is toohigh.M + A
the driver makes greater steering wheel movements.M + A
the exhaust system's particulate filter is full - the temporarily disen-gaged Start/Stop function is reac-tivated as soon as an automaticcleaning cycle has been per-formed (see Diesel particle filter(DPF) (p. 305)).M + A
the road is very steep.M + A
a trailer is connected electrically to the car’s electrical system.M + A
the bonnet has been opened
B
.M + A
the gearbox does not have normal operating temperature.A
ConditionsM/A A
the atmospheric air pressure is less than equivalent to 1500-2500metres above sea level - the cur-rent air pressure varies with theprevailing weather conditions.A
adaptive cruise control Queue Assist is activated.A
the gear selector is in
S position C
or " +/-".A
A
M = Manual gearbox, A = Automatic gearbox.
B With certain engines only.
C Sport mode.
Related information
• Start/Stop* (p. 279)
• Start/Stop* - function and operation (p. 280)
• Starting the engine (p. 264)
• Start/Stop* - settings (p. 285)
• Start/Stop* - the engine does not auto-start (p. 284)
• Start/Stop* - the engine auto-starts (p.283)
• Start/Stop* - involuntary engine stoppagemanual gearbox (p. 284)
• Start/Stop* - symbols and messages (p.286)
• Battery - Start/Stop (p. 365)
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speed for a few minutes in order to allow the gearbox to cool down.
• If the car overheats, the air conditioningmay be switched off temporarily.
• Do not turn the engine off immediatelyyou stop after a hard drive.
NOTE
It is normal for the engine's cooling fan to operate for a time after the engine hasbeen switched off.
Driving with open tailgate
When driving with the tailgate open, toxic exhaust fumes can be sucked into the carthrough the cargo area.
WARNING
Do not drive with an open tailgate! Toxic exhaust fumes could be drawn into the carthrough the cargo area.
Related information
•Loading (p. 142)
Overload - starter battery
The electrical functions in the car load the starter battery (p. 361) to varying degrees.Avoid using the key position (p. 70)
II when
the engine is switched off. Instead use the I
mode - which uses less power. Also, be aware of different accessories that load the electrical system. Do not use func-tions which use a lot of power when theengine is switched off. Examples of suchfunctions are: • ventilation fan
• headlamps
• windscreen wiper
• audio system (high volume).
If the starter battery voltage is low then the combined instrument panel's information dis- play shows the text
Low battery Power
save mode. The energy-saving function then
shuts down certain functions or reduces cer- tain functions such as the ventilation fanand/or audio system.
–In which case, charge the battery by star- ting the engine and then running it for atleast 15 minutes - starter battery chargingis more effective during driving than run-ning the engine at idling speed while sta-tionary.
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WARNING
•Check that the steering lock is unlocked before towing.
• The remote control key must be in keyposition
II - in position I all airbags are
deactivated.
• Never remove the remote control keyfrom the ignition switch when the caris being towed.
WARNING
The brake servo and power steering do not work when the engine is switched off - thebrake pedal needs to be depressedabout 5 times more heavily and the steer-ing is considerably heavier than normal.
Manual gearboxPrior to towing:
–Move gear lever into neutral and release the parking brake.
Automatic gearbox GeartronicPrior to towing:
–Move the gear selector to position
N and
release the parking brake.
Automatic gearbox PowershiftThe model with Powershift transmission should not be towed as it is dependent on theengine running in order to receive sufficient lubrication. If towing still has to take place,the route must be as short as possible andthen with very low speed. In the event of uncertainty as to whether or not the car is equipped with Powershift trans-mission, this can be verified by checking thedesignation on the gearbox label under thebonnet, see Type designations (p. 386). Thedesignation ”MPS6” means that it isPowershift transmission - otherwise it isGeartronic automatic transmission.
IMPORTANT
Avoid towing.
• However, the car can be towed for a short distance at low speed to move itfrom a dangerous position - not furtherthan 10 km and not faster than10 km/h. Note that the car mustalways be towed with the wheels roll-ing forward.
• In the event of moving a longer dis-tance than 10 km, the car must betransported with the drive wheelsraised from the road - professionalrecovery is recommended.
Prior to towing:
–Move the gear selector to position
N and
release the parking brake.
Jump startingDo not tow the car to bump start the engine. Use a donor battery if the battery is dis-charged and the engine does not start, seeJump starting with battery (p. 270).
IMPORTANT
The catalytic converter may be damaged during attempts to tow-start the engine.
Related information
• Towing eye (p. 315)
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WARNING
The ignition system has very high voltage and output. The voltage in the ignition sys-tem is highly dangerous. The car's electri-cal system must always be in key position0 when work is being performed in the
engine compartment; see Key positions -functions at different levels (p. 70). Do not touch the spark plugs or ignition coil when the car's electrical system is inkey position II or when the engine is hot.
Engine compartment except 4 cyl. 2.0 l 2
The appearance of the engine compartment may differ depending on engine variant.
Coolant expansion tank
Power steering fluid reservoir
Engine oil dipstick
3
Radiator
Filling engine oil
Reservoir for brake and clutch fluid (located on the driver's side)
Battery
Relay and fuse box
Filling washer fluid
Air filter
WARNING
The ignition system has very high voltage and output. The voltage in the ignition sys-tem is highly dangerous. The car's electri-cal system must always be in key position0
when work is being performed in the
engine compartment; see Key positions -functions at different levels (p. 70). Do not touch the spark plugs or ignition coil when the car's electrical system is inkey position II or when the engine is hot.
Related information
• Bonnet - opening and closing (p. 343)
• Engine compartment - checking (p. 344)
Engine compartment - checking
Some oils and fluids should be checked at regular intervals.
Regular checkingCheck the following oils and fluids at regularintervals, e.g. when refuelling:
• Coolant
• Engine oil
• Power steering fluid (not cars with 4-cyl. 2.0 litre engine 4
)
• Washer fluid
WARNING
Remember that the radiator fan (located at the front of the engine compartment,behind the radiator) may start automati-cally some after the engine has beenswitched off. Always have the engine cleaned by a workshop. There is a risk of fire if theengine is hot.
Related information
• Bonnet - opening and closing (p. 343)
• Engine compartment - overview (p. 343)
• Coolant - level (p. 349)
• Engine oil - checking and filling (p. 346)
2
Also applies to the B4204T7 engine.3 Engines with electronic oil level sensor do not have a dipstick (5-cyl. diesel).
4 However, does apply to the B4204T7 engine.
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Avoid sparks and naked flames.
Risk of explosion.
Must be taken for recy- cling.
NOTE
An expended battery must be recycled in an environmentally safe manner as it con-tains lead.
Related information
•Battery (p. 361)
Starter battery - replacement
The starter battery in the car can be replaced without the help of a workshop. The starter battery is a traditional 12 V bat- tery.
RemovalFirst of all
: Take the remote control key from
the ignition switch and wait at least 5 minutesbefore any electrical connections are touched- this is because the car's electrical systemneeds to store the necessary information tocontrol modules.
Open the clips on the front cover and remove the cover.
Release the rubber moulding so that the rear cover is free.
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