3 Series E46 316i (M43TU) SAL
VS-23/Starringer
Baugruppe/Group: 36
36 03 99 (484)
weltweit
all countries
09/1999
Information on tyre pressure control (RDC)
E38, E46, E39
Situation:
If the message "Check tyre pressure" appears in the instrument cluster, or the yellow LED
(basic instrument cluster) lights up, you should correct the air loss in the tyres at the next
opportunity (loss of air due to natural diffusion under normal operating conditions). If the
tyre pressure is corrected without performing the "Set tyre pressure", implausible RDC
messages may occur and the LED may light up.
Action:
After correcting the air pressure, with the engine off and terminal 15 on, press the "Tyre
pressure set button" and hold (approx. 6 seconds) until the words "Set tyre pressure"
appears in the instrument cluster (high cluster) or the yellow LED lights up. If implausible
tyre pressure messages occur thereafter, check whether the "Set tyre pressure" was
performed properly after the tyre pressure was corrected.
The RDC is set to trigger the message "Check tyre pressure" after a loss of just 0.2 bar
(text or yellow lamp).
When checking pressure, this pressure differential cannot be detected to this degree,
particularly in the transition period from the cold season to the
warm season.
Moreover, it should be noted that this pressure differential can be caused by differences in
the inflators used.
At vehicle handover or in case of defective tyres, please note the Service Information
bulletin 36 02 98 (377).
SI 36 02 98 (377)
Procedure:
Further situations which may cause implausible RDC messages:
-
Unfavorable wiring harness routing in the vicinity of the control unit:
There must be no tight radii or even kinks or bends in the cable routing of the wiring
harness to the control unit.
-
Incorrectly routed wiring at the control unit:
Make sure that all wires leading to the control unit are routed correctly. Wires which
are tangled or twisted around each other must be avoided.
-
Incorrectly engaged connectors in the vicinity of the xenon headlights:
All connectors in the vicinity of the xenon headlights must sit securely and be properly
engaged. Loose or incorrectly engaged connectors could cause malfunctions in the
RDC when the xenon headlights are switched on.
-
Current-carrying cables in the vicinity of the reception aerials:
The RDC reception aerials, which are located in the wheel housings, must not be
positioned anywhere other than the location at which they are fitted in the factory. No
current-carrying wires are to be routed under or adjacent to the aerials.
-
Radar warner:
Operating a radar warner can also cause malfunctions in the RDC.
-
Cordless headphones or similar:
If a complaint occurs repeatedly, deactivate any retrofit equipment which uses a
transmission frequency or which may have an effect on the electromagnetic
SI Information on tyre pressure control (RDC) E38 E46 E39
BMW AG - TIS
19.01.2013 09:32
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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