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11. USING THE BABY INSERT

6. SAFETY NOTES

 

 Please take the time to read these instructions carefully and keep them 

to hand in the intended operating instructions compartment 

17

 on the 

child safety seat at all times. The instructions must be kept with the child 
safety seat if the latter is passed on to a third party. 
In order for the DUALFIX i-SIZE to protect your child correctly, it must al-
ways be installed and used exactly as described in these instructions. It is 
possible that some of the child safety seat settings will lead to restrictions 
when used in "i-Size" vehicle seat positions. 

 DANGER! For the protection of your child:

•  In the event of an accident with a collision speed of more than 10 km/h, the 

child safety seat may be damaged without the damage becoming immediately 
visible. In this case the child safety seat must be replaced. Please dispose of 
it properly.

• As a rule, have your child safety seat checked if it has been damaged (e.g. if it 

falls on the ground).

• Regularly check all important parts for damage. Ensure that all mechanical 

parts, in particular, are fully functional.

• Never lubricate or oil parts of the child safety seat.

 Never leave your child unattended in the child safety seat in the vehicle.

• Only allow your child to enter and exit the vehicle on the pavement side.
• Protect the child safety seat from intensive direct sunlight when it is not in use. 

The child safety seat can get very hot in direct sunshine. Children's skin is 
sensitive and could be harmed as a result.

• The more snugly the belt fi ts over your child's body, the better they will be pro-

tected. Therefore, avoid putting thick clothes on your child under the belt. 

 

Take regular breaks on long journeys in order to give your child the opportu-
nity to run about and play.

• Use on the rear seat: Move the front seat far enough forwards to ensure that 

your child's feet cannot hit the backrest of the front seat (to prevent the risk of 
injury).

 DANGER! For the protection of all vehicle occupants:

In the case of an emergency stop or an accident, unsecured persons or objects 

may cause injury to other vehicle occupants. Please always check that ...

• no other load-bearing contact points are used other than those specifi ed in 

these instructions and marked out on the child safety seat. 

• the backrests of the vehicle seats are locked (e.g. that a folding rear seat 

bench latch is engaged).

• all heavy or sharp-edged objects in the vehicle (e.g. on the parcel shelf) are 

secured.

• all persons in the vehicle have their seatbelts fastened.
• the child safety seat is always secured when it is in the vehicle, even if no child 

is being transported.

 WARNING! For your protection when handling the child seat:

• Never use the child safety seat free-standing, not even for test sitting.
• To avoid damage, ensure that the child safety seat is not jammed in between 

hard objects (vehicle door, seat rails, etc.).

• Keep the child safety seat in a safe place when it is not in use. Do not place any 

heavy objects on the seat and do not store it directly next to sources of heat or 
in direct sunlight.

 CAUTION! For the protection of your vehicle:

• Certain vehicle seat covers made from more sensitive materials (e.g. velour, 

leather) may sustain signs of wear and tear when using child safety seats. For 
optimum protection of your vehicle seat covers, we recommend using the 
BRITAX RÖMER vehicle seat protector from our range of accessories.

PAGE II

1. If your vehicle is not fi tted with ISOFIX insertion aids as standard, clamp 

the two insertion aids 

02

, which are included in the scope of delivery of 

the seat*, with the opening pointing upwards, to the two ISOFIX fastening 

points 

01

 of your vehicle.

 

TIP!

 The ISOFIX fastening points are located between the surface and the 

backrest of the vehicle seat.

2. Move the headrest of the vehicle seat into the top position.

* The insertion aids facilitate the installation of the child safety seat with the use of the 

ISOFIX fastening points and prevent damage to the vehicle seat covers. As long as they 

are not used, remove them and keep them in a safe place. For vehicles with a folding 

backrest, the insertion aids need to be removed before folding the backrest. Any prob-

lems occurring usually come from soiling or external objects on the insertion aids and 

on the hook. Remove soiling or external objects to rectify such problems.

7. PREPARATORY WORK

 

8. INSTALLATION OF THE CHILD SAFETY 

SEAT

1. ADJUSTING THE SHOCK BAR

1.1 Place the child safety seat facing backwards 

(in the direction of travel) on a vehicle seat 

which has been approved for use.

1.2 Press the adjustment handle 

14

 on the shock 

bar 

10

 down with one hand and use the other 

hand to pull the shock bar 

10

 up at the same 

time, until it unlocks.

1.3 Adjust the angle of the shock bar 

10

 to the 

angle of your vehicle seat backrest so the 

shock bar 

10

 engages with a clicking sound.

10. USING THE CHILD SAFETY SEAT

2. PREPARING THE ISOFIX 

2.1 Pull the grey fabric loop 

15

 until the ISOFIX 

locking arms 

16

 are fully extended.

2.2 Push the green safety button 

06

 and the red 

release button 

05

 on both sides of the seat 

towards each other. This ensures that both 

hooks on the ISOFIX locking arms 

16

 are 

open and ready to use.

3.

 

FASTENING THE ISOFIX

3.1  Position the two ISOFIX locking arms 

16

 

directly in front of the two insertion aids 

02

.

3.2 Push both ISOFIX locking arms 

16

 into the 

insertion aids 

02

 until the ISOFIX locking 

arms 

16

 engage on both sides with a clicking 

sound.

 DANGER!

 The green safety button 

06

 

must be visible on both sides so that the child 

safety seat is correctly fastened.

4. PUSHING THE CHILD SAFETY SEAT ON 

SECURELY 

Push the child safety seat as far as possible 

towards the vehicle seat backrest.

5. CHECKING THE FASTENING

Shake the child safety seat to ensure that it is 

securely fastened and check the safety buttons 

06

 to make sure that the two indicators are fully 

green.

6. INSTALLING THE SUPPORT LEG 

6.1  Pull the support leg 

21

 away from the back of 

the child safety seat until you hear a click and 
the support leg 

21

 is fully extended. The red 

marking must not be visible any more. 

6.2 Push both adjustment buttons 

22

 and pull 

out the support leg 

21

 until it rests fi rmly on 

the fl oor of the vehicle. The indicator on the 
support leg 

21

 must be fully green and the 

two adjustment buttons 

22

 must engage with 

a clicking sound. 

 DANGER! 

The support leg 

21

 must never 

be suspended in mid-air or supported by 

other objects. Make sure that the support leg 

21

 does not lift the DUALFIX i-SIZE bottom 

section 

19

 up from the surface of the vehicle 

seat.

1. LOOSENING THE SHOULDER STRAPS

To loosen the shoulder straps, press the strap 

adjustment button 

11

 and, at the same time, pull 

both shoulder straps 

09

 forwards.

 

CAUTION!

 Do not pull the shoulder pads 

08

.

2. OPENING THE HARNESS BUCKLE

To open the harness buckle 

04

, press the red 

button on the harness buckle. 

5. ADJUSTING THE HEADREST

A correctly adjusted headrest 

03

 ensures optimum 

protection for your child in the child safety seat:

The headrest 

03

 must be adjusted so that the 

shoulder straps 

09

 are at the same level as your 

child’s shoulders or slightly higher.

To adjust the headrest: 

5.1 Loosen the harness (8.1).
5.2 Hold the release button 

07

 on the headrest 

03

 down and slide the headrest 

03

 until it is 

at the correct shoulder strap height.

5.3 Check that the headrest 

03

 is properly en-

gaged by sliding the headrest 

03

 down a little.

3. POSITIONING A CHILD IN THE SEAT

Place your child in the child safety seat. 
Make sure that the harness buckle 

04

 is folded 

forwards and place your child in the child safety 

seat.

 DANGER! 

Only use the child safety seat fac-

ing backwards on the passenger seat if the front 

airbag has been deactivated.

 

4. FITTING THE SHOULDER STRAPS

Lay the shoulder straps 

09

 over your child's 

shoulders.

 CAUTION!

 The shoulder straps 

09

 must not 

be twisted or have their places changed over.

6. CLOSING THE HARNESS BUCKLE 

Push the two buckle tongues 

29

 together and 

push them into the harness buckle 

04

 until they 

engage with a clicking sound.

7. TENSIONING THE ADJUSTMENT STRAP 

Pull the adjustment strap 

12

 until the strap lies fl at 

and snug on your child’s body.

 

WARNING!

 The hip belt must lie as low as pos-

sible over your child's hips.

1. Press the two adjustment buttons 

22

 on the support leg and push the bot-

tom part of the support leg into the top part until it is fully inserted. Release 

the adjustment buttons to fi x the support leg in the inserted position.

2. Loosen the ISOFIX fastening on both sides by pressing the green safety 

button 

06

 and the red release button 

05

 towards each other.

3. Move the ISOFIX locking arms 

16

 back into the seat shell 

18

 TIP! 

The ISOFIX locking arms are protected against damage once they 

are pushed back into the seat bottom.

   DANGER!

 The child safety seat must always be secured when it is in the 

vehicle, even if no child is being transported. 

Please observe the waste disposal regulations in your country.

Disposal of packaging

Container for cardboard boxes

Seat cover

Residual waste, waste incineration

Plastic parts

To be placed in the corresponding 

container according to labelling

Metal parts

Container for metals

Belt straps

Container for polyester

Buckle and tongue

Residual waste

12. ADJUSTING THE SEAT ANGLE

The seat shell of the 

DUALFIX i-SIZE

 can be used in six diff erent reclined posi-

tions facing either forwards or backwards:

To adjust the seat angle:

Pull the adjustment handle 

13

 forwards and push/

slide the seat shell 

18

 into the desired position. 

 

DANGER! 

The seat shell 

18

 must engage 

securely with a clicking sound regardless of its posi-
tion. Pull up on the seat shell 

18

 to ensure that it is 

engaged.

 

The shoulder straps 

09

 must be adjusted so that 

they run horizontally or just above your child’s 

shoulders.

 

The shoulder straps 

09

 are not allowed to run 

behind your child’s back, or level with/above their 

ears.

 

Before each car journey, in order to ensure your child’s safety, 

make sure that ...

• the child safety seat is fastened in the ISOFIX fastening points 

01

 on both 

sides with the ISOFIX locking arms 

16

 and both ISOFIX indicators 

06

 are 

fully green;

• the child safety seat is securely fastened;

14. DISPOSAL

13. REMOVING THE CHILD SAFETY SEAT

02

01

The DUALFIX i-SIZE can be used:

1. From 40–105 cm

 (

≤ 18 kg

) facing backwards. 

2. From 15 months up: 76–105 cm

 (

≤ 18 kg

) facing forwards. 

To change the direction of travel, press the rotation 

button 

20

 and turn the seat to the desired direction 

until it engages.
When facing forwards, the cushioning plate 

10

 must 

be in vertical position.

 DANGER! 

Before making any car journey, ensure 

that the rotating part of the child safety seat is fully 

engaged by trying to rotate the child safety seat in 

both directions.

 DANGER! 

Do 

not

 use the child safety seat facing 

forwards if your child is under 76 cm/15 months old. 

The baby insert must be used up to a maximum body size of 60 cm. 
Place the baby insert in the child safety seat and lay both shoulder straps 

09

 

over the baby insert.
Hook the two plastic hooks into the loops on the cover of the headrest 

03

.

Guide the harness buckle 

04

 and the crotch pad through the openings in the 

bottom part of the baby insert.

 

CAUTION! 

Always make sure that your child is properly secured.

• the support leg 

21

 is resting fi rmly on the fl oor of the vehicle and the indica-

tor on the support leg 

21

 is green;

• the rotating seat shell 

18

 is fully engaged and both indicators are black;

• the harness of the child safety seat is fi tted snugly to the child’s body with-

out being constricting;

• the shoulder straps 

09

 are correctly adjusted and the straps are not twisted;

• the shoulder pads 

08

 are in the correct position on your child’s body;

• the front airbag is deactivated if you are using the child safety seat facing 

backwards on the passenger seat; 

• the child safety seat is facing in the right direction for your child's age/size; 
• the buckle tongues 

29

 are fastened into the harness buckle 

04

.

 

CAUTION!

 If your child tries to open the ISOFIX release buttons 

05

 or 

the harness buckle 

04

, stop immediately as soon as possible. Check 

whether the child safety seat is correctly fastened and ensure that your 

child is correctly secured. Explain to your child the dangers associated 

with their actions.

13

18

03

04

09

20

10

12

9. CHANGING THE DIRECTION OF TRAVEL 

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09

04

04

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