service BMW 3 SERIES 2003 E46 Model Yar Changes

4
2001 model year changes
INSTRUMENT CLUSTER SIA RESET
Model: E38,E39,E46,E52,E53
Production Date: E46 from 9/99
E38,E39,E53 from 9/00
On 2001 vehicles without the diagnostic connector in the engine compartment, the use of
the SIA reset tool is not possible. The service indicator may be reset using the reset mode
in the instrument cluster.
Reset procedure for high and low clusters with SIA III using the Reset Mode:
• Ignition key must be “off”
 Press and hold the trip odometer reset button in the instrument cluster (left button), and
turn the ignition key to the first position.
 Keep the button pressed for approximately 5 seconds until one of the following words
appear in the display: “OIL SERVICE, or “INSPECTION”, with “RESET”.
The service due is shown with “reset” if the coded minimum consumption limit has been
reached and resetting is possible. If “reset” is not shown, the minimum limit has not been
reached and resetting is not possible.
 Press and hold the reset button again until the word “RESET” begins to flash.
½
P
1
20406080100
120
1400234
5
6
7
!ABS

 

 
 






miles
0
10
15 20 40
+
  


TURN THE KEY TO
POSITION 1 (KL R)PRESS AND HOLD
LEFT BUTTON.
KEEP PRESSED FOR
5 SECONDS AFTER
KEY IS SWITCHED
ON.
TAP BUTTON TO
RESET DISPLAY.
12
Service interval reset: high cluster

5
2001 model year changes
 While the display is flashing, press the left button briefly to reset the service interval.
After the display has shown the new interval the following will appear: “END SIA”
The system can only be reset again after 10 liters (2.5gal) of fuel have been consumed.
Reset procedure for clusters with SIA IV using the Reset Mode.
(possible from 9/99
for E46, MY2001 E52)
 Ignition key must be “off”
 Press and hold the trip odometer button in the instrument cluster (left button), and turn
the ignition key to the first position.
 Keep the button pressed for approximately 5 seconds until one of the following words
appear in the display: “OIL SERVICE, or “INSPECTION”, with “rESET”.
 Release the reset button and press and hold again until “rESET” begins to flash.
 While the display is flashing, press the left button briefly to reset the service interval.
After the display has shown the new interval, the following will appear: “END SIA”
The system can only be reset again after 10 liters (2.5gal) of fuel have been consumed.





UNLEADED GASOLINE ONLY01220km/h MPH1/min
x1000
40 6080100120 140
160
180
200
220
240
1
023
4
5
6
7
503020
151220
406080
100
120
140
11
Mm ile s
  




1
2
PRESS AND
HOLD LEFT
BUTTONTURN KEY TO POSITION 1
(KL R)
KEEP BUTTON
PRESSED FOR 5
SECONDS AFTER
KEY IS SWITCHED
ON.
TAP BUTTON TO
RESET DISPLAYE46 service interval reset

15
2001 model year changes
IHKR control unit with operating controls
The IHKR control unit is incorporated into the control panel. The control panel consists of
three buttons and three rotary dials.
Functional Description:
Air distribution:is carried out using the mechanical rotary dial acting on three
bowden cables.
Blower adjustment:is carried out using the rotary dial potentiometer (22 steps). The
control unit signals the final stage via a variable voltage signal.
Temperature control: The desired interior temperature is set with the rotary dial
potentiometer on the control panel. Temperature regulation is based on the Y-factor.
The inputs used to determine the Y-factor are:
 Position of the temperature control potentiometer dial
 Heater core temperature
 Coolant temperature
 Exterior Temperature
 Interior Temperature
Control of the interior temperature is carried out by the control unit cycling the water
valve to regulate the temperature of the heater core. During heater operation the
auxiliary water pump will be switched on to increase coolant circulation through the
heater core. The service station feature is carried over to the E39 IHKR.
Fresh air/recirculation:Recirculation is requested by an input to the control panel
button or the MFL. The control unit actuates the fresh air/re-circ stepper motor for
control of the flap position. Ram effect air is compensated for.
Air conditioning: :

The request for air conditioning is made by means of a push button.
X611 X610
12 pin 26 pin
X18341
3 pinBlue - vent flaps
Red - defrost flaps
Green - footwell flaps3 cables1. Temperature control potentiometer
2. Air distribution mechanical knob
3. Fan control potentiometer
123
4
5
6
4. Recirculation
5. Air conditioning request
6. Rear window defroster

17
2001 model year changes
IHKA IV
The IHKA system is standard equipment on 530i, 540i/it and M5 models. It is available as
an option for the 525i/it. IHKA has been redesigned for the 2001 E39, it is identified as
IHKA IV. The carry over features from the previous version are:
 Integrated control panel/module.
 Separate temperature control for driver and passenger.
 Air distribution control through the use of 5 “smart” stepper motors and one fast acting
hard wired stepper motor.
 Automatic recirculation control (AUC).
 Recirculation control via MFL.
 “Rest” function for residual heat when engine is not running.
 Service station feature that closes the water valves when stopped to prevent hot coolant
flooding the heater core.
 A/C compressor clutch activation via a final stage control.
 Stratification flap control via a bowden cable.
Please refer to the Climate Control course material ST 054 for a complete functional description of
E39 IHKA
70 0 F 640 F
-+AUTO
A
AUTO
MAX

22
2001 model year changes
E39 Rear Head Protection System (HPS)
For 2001, rear head protection airbags (HPS)
will be available for sedans ordered with rear
side airbags.
The airbags are a cushion (not an ITS) that is
deployed from the C-pillar. The HPS will n no
ot
t
be
de-activated along with the side airbags from
the factory since there is no danger to small
children sitting out of position.
A vehicle with rear HPS can be identified by
observing “HPS” embossed in the C-pillar
cover.
Rear airbags with HPS will be standard equipment on the 2001 E39 M5.
Review Questions
1. What addition was made to the 16 pin OBD connector that made diagnosis possible
with the DIS/MoDiC?
2. Describe the procedure to reset the Service Interval Indicator from the instrument
cluster.
3. How does the E39 IHKR system maintain the desired cabin temperature?
4. Was the “REST” feature deleted from the IHKA IV system?
5. What was the addition made to the rear airbag system of the 2001 E39?