Page 525 of 673

Count
ryRadio equipment appr oval
number
Schrader Electronics Ltd. 11
Te ch nology Park,
Belfast Road, Antrim BT41 1QS,
Nor thern Ireland United Kingdom
Ghana NCA Appr oved: 1R3-1M-7E1- 10D
NCA Appr oved: BR3-1M-GE2-X73
Indonesia GG4T: 54083/SDPPI/20 17
PLG36 12
DG6W2D4
57 058/SDPPI/20 18
PLG36 12
MC34MA4:
25626/ISDPPI/20 15
PLG36 12 Count
ryRadio equipment appr oval
number
Jordan Kingdom of Jordon Type appr oval
fo rTy re Pressure sensor.
Manufacturer: Schrader Elect ron‐
ics Ltd.
Model: GG4T
Ty pe Appr oval Numb er:
TRC/LDP/20 17/456
Model: DG6W2D4
Ty pe Appr oval Numb er:
TRC/LPD/20 18/139
Model: MC34MA4
Ty pe Appr oval Numb er:
TRC/LPD/20 11/158 Countr
yRadio equipment appr oval
number
Morocco AGREE PAR L'ANRT MA ROC
Nume rod'agreement: MR 14777
ANRT 20 17
Date d'agrement: 20/09/17
Nume rod'agrement: MR 16355
ANRT 20 18
Date d'agrement: 19/04/20 18
Nume rod'agrement: MR 6706
ANRT 20 11
Date d'agrement: 17/11/20 11
Mexico IFT: RL VSCGG17- 1665
IFETEL: RL VSCDG18-04
IF T: RC PSCMR14-062 522
Wheels and tyres
Page 526 of 673
Count
ryRadio equipment appr oval
number
Mold ova 024
10
24 Count
ryRadio equipment appr oval
number
Pa kis tan Philip‐
pines
NTC
Type Appr oved
No: ESD-13 06871 C
No: ESD-17 1597 7C
No: ESD-1 817081C Countr
yRadio equipment appr oval
number
Serbi aG G4T И
005 17
DG6W2D4 И
005 18
MC34MA4 И
01111 Wheels and tyres
523
Page 527 of 673
Count
ryRadio equipment appr oval
number
Singapo reComplies with
IMDA Standards
NO5 24-13
DA 105282
South
Africa TA
-20 17/3884 Appr oved
TA -20 17/2933 Appr oved
TA -20 11/1 370 Appr oved Count
ryRadio equipment appr oval
number
Ukraine GG4T UK.TF
DG6W2D4
UA
. TR.028
Co rax 3 109 Count
ryRadio equipment appr oval
number
United
Arab Emi‐
ra tes TRA
REGISTERED NO: ER57985/17
REGISTERED NO: ER960528
DEALER NO: DA00470 74
REGI STERED NO: ER37066/ 15
DEALER NO: DA00470 74/10
Vi etnam Schrader Electronics Ltd.
Model: GG4T
No: C0 17019101 7AF04A2
Model: DG6S2D4
No: C00 78070518 AF04A2 524
Wheels and tyres
Page 540 of 673

Note
s ontech nical data
Mercedes-AMG vehicles: be sure toobser ve
th e no tes in the Supplement. Otherwise, you
may failto recognise dangers.
Plug-in hybrid: be sure toobser vethe no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
The tech nical da tawa s de term ined in accord‐
ance with EU Directives. The data stated on ly
applies tovehicles with standard equipment. Yo u
can obtain fur ther information from a Mercedes-
Benz Service Centre.
Only for ce rtain countries: you can find vehi‐
cle-specific vehicle data in the EC-Certificate of
Conformity (CERTIFIC ATE OF CONFORMITY).
These documents are deli vered with your vehi‐
cle. On-board electronics
Note
s on tampering with the engine elec‐
tronics *
NO
TEPremature wearthro ugh improper
main tenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in valida‐
te d. #
Alw ays ha vewo rkon the engine elec‐
tronics and related components car ried
out at a qualified specialist workshop. Tw
o-w ayradios Note
s onfitting two-w ayradios &
WARNING Risk of accident due to
improper workon two-w ayradios
The elect romagnetic radiation from two-w ay
ra dios can inter fere with the on-board elec‐ tronics if RF transmit
ters are manipulated or
re trofitted inco rrectly.
This could jeopardise the operating saf ety of
th eve hicle. #
You should ha veall workon electrical
and electronic components car ried out
at a qualified specialist workshop. &
WARNING Risk of accident from incor‐
re ct ope ration of two-w ayradios
If yo u operate two- wayra dios inco rrectly in
th eve hicle, the electromagnetic radiation
could inter fere with the on-board electronics,
e.g.:
R ifth e two-w ayradio is not connec tedto
an exterior aerial
R ifth eex terior aerial is not cor rectly
mounted or is not of low reflection
This could jeopardise the operating saf ety of
th eve hicle. #
Have the lo w-reflection exterior aerial
fi tted at a qualified specialist workshop. Te
ch nical da ta537
Page 541 of 673

#
When operating two-w ayradios in the
ve hicle, alw ays connect them tothe
lo w- reflection exterior aerial. *
NO
TEInva lidation of the operating per‐
mit due tofailure tocomply wi th the
instructions for ins tallation and use The operating permit may be in
validated if
th e instructions for ins tallation and use of
two-w ayradios are not obser ved. #
Only use appr oved frequency bands. #
Obser vethe maximum permissible out‐
put po wer in these frequency bands. #
Only use appr oved aerial positions. 1
Front roof area
2 Rear roof area
3 Rear wings
On vehicles with a panoramic sliding sunroof, fit‐
ting an ae rial to the front or rear roof area is not
permitted. On
there ar wings, it is recommended that you
fi t th e aerial on the side of theve hicle closest to
th e cent reofthero ad.
Use Tech nical Specification ISO/TS 21609 (Road
Ve hicles – "EMCs for ins tallation of af term arket
ra dio frequency transmitting equipment") when
re trofitting two-w ayradios. Comply with the
legal requirements for de tach able parts.
If yo ur vehicle has fittings for two-w ayradio
equipment, use the po wer supp lyand aerial con‐
nec tors prov ided in the pre-ins tallation. Be sure
to obser vethe manufacturer's supplements
when fitting.
Tw o-w ayradio transmission output
The maximum transmission output (PEAK) at the
base of the aerial must not exceed theva lues in
th efo llowing table. 538
Tech nical da ta
Page 542 of 673
Fr
equency band and maximum transmission
output Fr
equency band Maximum transmis‐
sion output
Sho rtwa ve
3 - 54 MHz 10
0 W
4 m frequency band
74 - 88 MHz 30 W
2 m frequency band
14 4 - 174 MHz 50 W
Tr unked radio sys‐
te m/T etra
380 - 460 MHz 10 W
70 cm frequency
band
400 - 460 MHz 35 W
Tw o-w ayradio
(2G/3G/4G) 10 W The
following can be used in theve hicle without
re strictions:
R two-w ayradios with a maximum transmission
output of up to100 mW
R RF transmitters with transmitter frequencies
in the 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(trunked radio sy stem/T etra)
R mobile phones (2G/3G/4G)
There are no restrictions when positioning the
aerial on the outside of theve hicle for some
wa vebands.
This applies tothefo llowing wavebands:
R trunked radio sy stem/T etra
R 70 cm frequency band
R 2G/3G/4G Ve
hicle identification plate, VIN and engine
number overview
Ve hicle identification plate Te
ch nical da ta539
Page 596 of 673

Display messages
Possible causes/consequences and M
MSolutions #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page 525).
Check tyre pressures then
restart Run Flat Indicator *T
he tyre pressure loss warning sy stem generated a displ aymessa geand has not been restar ted since. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page 525).
Run Flat Indicator inopera-
tive *T
he tyre pressure loss warning sy stem is malfunctioning. #
Consult a qualified specialist workshop.
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being recei ved. The tyre pressure monitor is temp orarily una vailable. #
Drive on.
The tyre pressure monitor restarts automatically as soon as the cause has been rectified.
Tyre press. monitor inoper-
ative *T
he tyre pressure monitor is faulty. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
If th e tyre pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure
loss in one or more of the tyres.
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 593
Page 601 of 673
Display messages
Possible causes/consequences and M
MSolutions
Á Key not detected (red dis‐
play message) *T
hekey cannot be de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you swit choff the engine:
R You can no lon gerst art the engine.
R You cannot centrally lock theve hicle. #
Ensure that theke y is in theve hicle.
If th eke y de tection function has a malfunction due toast ro ng radio signal source: #
Stop theve hicle immediately in accordance with the traf fic conditions. #
Place theke y in the slot forst arting the engine with theke y (/ page174).
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot forst arting the engine with theke y (/ page174). 598
Displaymessa ges and warning/indicator lamps