Page 359 of 491
358 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
H
The yellow warning lamp for the
tire pressure monitoring sys-
tem* comes on.
The tire pressure monitoring system* de-
tects a loss of pressure in at least one tire.
Bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Take note of the messages in the multi-
function display.
The warning lamp goes out once the tire in-
flation pressure monitor has been reactivat-
ed after the tire inflation pressures have
been corrected.
Warning!
G
When the tire pressure monitoring system*
warning light is lit, one or more of your tires
is significantly under-inflated. You should
stop and check your tires as soon as possi-
ble, and inflate them to the proper pressure
as indicated on the vehicle’s tire information
placard.
Driving on a significantly under-inflated tire
causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
Each tire, including the spare, should be
checked monthly when cold and set to the
recommended inflation pressure as speci-
fied in the vehicle placard and owner’s
manual.
iThe recommended tire inflation pres-
sures for your vehicle can be found on
the placard of the driver’s door B-pillar
or the inside of the fuel filler flap, not in
the owner’s manual.
Page 391 of 491
390 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Tire pres. monitor
reactivated
The tire pressure monitoring system* is
using the current pressure values as the
basis for monitoring.
Tire pressure
displayed only
after driving
a few mins.
The tire inflation pressure is being
checked.
Tire pres. monitor
temporarily
unavailable
The tire pressure monitoring system* is
unable to monitor the tire inflation pres-
sure due to
the presence of several wheel sensors
in the vehicle.
excessive wheel sensor tempera-
tures.
a nearby radio interference source.
unrecognized wheel sensors mount-
ed.
Remove any extra wheel sensors from
the vehicle.
As soon as the causes of the malfunction
have been removed, the tire pressure
monitoring system* automatically be-
comes active again.
Tire pres.
Please rectify
The pressure is too low in one or more
tires.
Check and correct tire inflation pres-
sure as required (
page 318).
Page 392 of 491
391 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
H
Reactivate
tire pres. monitor
after corr. pres.
There was a tire pressure warning mes-
sage.
The yellow warning lamp for the tire pres-
sure monitoring system* comes on and
you have not reactivated the system
since the last tire pressure warning mes-
sage.
Reactivate the tire pressure monitoring
system* after correcting the tire pressure
values (
page 320).
Tire pres. monitor
deactivated
Drive to workshop
The tire inflation pressure monitor is mal-
functioning.
A wheel without proper sensor was in-
stalled.
Have the tire inflation pressure monitor
checked by an authorized Mercedes-Benz
Center.
Change the wheel (
page 419).
Page 393 of 491
392 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Caution
Tire pressure
One or more tires is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Ob-
serve the traffic situation around you.
Change the wheel (
page 419).
Have the damaged wheel repaired or
replaced at an authorized Mercedes-Benz
Center.
Tire pres.
Check tire
The tire inflation pressure in one or
more tires is already below the mini-
mum value.
The tire inflation pressure in one or
more tires is low.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Check the tires.
Check and correct the tire inflation pressure
as required.
If necessary, change the wheel (
page 419).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 394 of 491
393 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
H
Caution
Tire pres., RL
The left rear tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Change the wheel (
page 419).
Have the damaged wheel repaired or
replaced at an authorized Mercedes-Benz
Center.
Tire pressure, RL
Check tire
The left rear tire inflation pressure is
low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and correct the tire inflation pressure
as required.
If necessary, change the wheel (
page 419).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 395 of 491
394 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Caution
Tire pres., RR
The right rear tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Change the wheel (
page 419).
Have the damaged wheel repaired or
replaced at an authorized Mercedes-Benz
Center.
Tire pressure, RR
Check tire
The right rear tire inflation pressure is
low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and correct the tire inflation pressure
as required.
If necessary, change the wheel (
page 419).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 396 of 491
395 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
H
Caution
Tire pres., FL
The left front tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Change the wheel (
page 419).
Have the damaged wheel repaired or
replaced at an authorized Mercedes-Benz
Center.
Tire pressure, FL
Check tire
The left front tire inflation pressure is
low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and correct the tire inflation pressure
as required.
If necessary, change the wheel (
page 419).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 397 of 491
396 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Caution
Tire pres., FR
The right front tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Change the wheel (
page 419).
Have the damaged wheel repaired or
replaced at an authorized Mercedes-Benz
Center.
Tire pressure, FR
Check tire
The right front tire inflation pressure
is low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and correct the tire inflation pressure
as required.
If necessary, change the wheel (
page 419).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
