Problem on my acceleration

[Mat Yie]

To all sifus,If my 320i M54 didn’t start for 2 days, after I start and the temperature up to normal then I shift to ‘D’ and press the gas pedal but my car didn’t move smoothly. It’s move but not smooth as usual, it’s like moving in 3rd or 4th gear. When it’s happened, I have to shut down my engine and start my engine again then it will be back to normal.Why this happened? TQ in advance.

 

[jarance]

There is nothing wrong with the car.. It just got upset at you for neglecting it for 2 days..

BTW, did you say " I miss you before you start the car".


Seriously, maybe battery voltage a bit low. did you get any light/alarm on the dash board when the car went into "limp" mode.

 

[Mat Yie]

There is nothing wrong with the car.. It just got upset at you for neglecting it for 2 days..

BTW, did you say " I miss you before you start the car".


Seriously, maybe battery voltage a bit low. did you get any light/alarm on the dash board when the car went into "limp" mode.

No alarm was display on dashboard during this happened.

How can i check my voltage? is there any volt meter for me to refer in my E46?

 

[jarance]

You can check your battery by using the below procedure if you dont have a voltmeter.
See TEST #9.0 listed below.

Instructions to access the hidden OBC functions:

1. Hold Trip Reset while turning ignition key to on position
2. OBC should show "Test"
3. Use Trip Reset to select function 19.0 that unlocks all the features
4. Wait for display to show "Off"
5. Depress Trip Reset for 1/4 second and release it
6. With no delay press Trip Reset several times to select one of the following function s

BMW E46 On-Board Computer (OBC) Hidden Codes
nr example description
1 Car Engine and cluster data
1.0 46nnn Chassis nr/VIN serial number (last 5 digits)
1.1 4nnn K-number
1.2 690236 Cluster Part #
1.3 045210 Coding (04)/diagnosis (52)/bus index (10)
1.4 1200 Week (12)/year of manufacture (2000)
1.5 09_160 Hardware (09) and software # (16.0) of cluster
1.6 Not used
1.7 04__44 CAN-version (04) KI-revision index (44)
2 (test) Cluster System Test - Activates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
3.0 1098 Used fuel in liters since last SI (Service Inspection)
3.1 0231 Periodic inspection days; elapsed days (since last SI)
4 Momentary Consumption
4.0 0145+ Instant fuel consumption - 0145=14.5 liters/100km
4.1 0018 Instant fuel consumption - 0018=1.8 l/Hour
5 Distance Gone Consumption
5.0 082 Average mileage; 082=8.2 liters/100km
5.1 0536 Calc. km to refuel (momentary distance to go)
6 Fuel Level sensor inputs in liters
6.0 109330+ Fuel level averaged; Left half sensor input=10.9 liters; Right sensor input=33.0 liters
6.1 0439+ Total tank level averaged; vlgs 6.0: 10.9+33.0=43.9 liters
6.2 0442+ Indicated value (44.2) and tank phase
7 Temperature and Speed
7.0 021+ Coolant/Engine temperature (2.1C)
7.1 130 Ambient/Outside temperature - chg met 5 pts. 125/130/135
7.2 + Engine speed / Current RPMs 1/min
7.3 + Vehicle speed / Current Speed in km/hour
8 Input value in HEX form
8.0 1d0+ System voltage ADC-Value Hex code
8.1 26C33C+ ADC Values HG left/HG right
8.2 0000 ADC Value brake degradation sensor (000=o.k.)
8.3 18C ADC Value outside temperature
9 Battery
9.0 140 Battery Voltage - 140 = UB 14.0v

 

[katakijau]

Thanks Jarance for this useful infos..

 

[Mat Yie]

You can check your battery by using the below procedure if you dont have a voltmeter.
See TEST #9.0 listed below.

Instructions to access the hidden OBC functions:

1. Hold Trip Reset while turning ignition key to on position
2. OBC should show "Test"
3. Use Trip Reset to select function 19.0 that unlocks all the features
4. Wait for display to show "Off"
5. Depress Trip Reset for 1/4 second and release it
6. With no delay press Trip Reset several times to select one of the following function s

BMW E46 On-Board Computer (OBC) Hidden Codes
nr example description
1 Car Engine and cluster data
1.0 46nnn Chassis nr/VIN serial number (last 5 digits)
1.1 4nnn K-number
1.2 690236 Cluster Part #
1.3 045210 Coding (04)/diagnosis (52)/bus index (10)
1.4 1200 Week (12)/year of manufacture (2000)
1.5 09_160 Hardware (09) and software # (16.0) of cluster
1.6 Not used
1.7 04__44 CAN-version (04) KI-revision index (44)
2 (test) Cluster System Test - Activates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
3.0 1098 Used fuel in liters since last SI (Service Inspection)
3.1 0231 Periodic inspection days; elapsed days (since last SI)
4 Momentary Consumption
4.0 0145+ Instant fuel consumption - 0145=14.5 liters/100km
4.1 0018 Instant fuel consumption - 0018=1.8 l/Hour
5 Distance Gone Consumption
5.0 082 Average mileage; 082=8.2 liters/100km
5.1 0536 Calc. km to refuel (momentary distance to go)
6 Fuel Level sensor inputs in liters
6.0 109330+ Fuel level averaged; Left half sensor input=10.9 liters; Right sensor input=33.0 liters
6.1 0439+ Total tank level averaged; vlgs 6.0: 10.9+33.0=43.9 liters
6.2 0442+ Indicated value (44.2) and tank phase
7 Temperature and Speed
7.0 021+ Coolant/Engine temperature (2.1C)
7.1 130 Ambient/Outside temperature - chg met 5 pts. 125/130/135
7.2 + Engine speed / Current RPMs 1/min
7.3 + Vehicle speed / Current Speed in km/hour
8 Input value in HEX form
8.0 1d0+ System voltage ADC-Value Hex code
8.1 26C33C+ ADC Values HG left/HG right
8.2 0000 ADC Value brake degradation sensor (000=o.k.)
8.3 18C ADC Value outside temperature
9 Battery
9.0 140 Battery Voltage - 140 = UB 14.0v

Thanks Jarance. I will do it soon.

 

[jarance]

Just try it on my car on Sunday and find that it works. I tried to go to step 9 without doing step3 till 6. The display just went blank. It only works for info 1.0 till 1.5.

In order to get the function/display to work properly, you must perform step 3 till 6 in order to display the info.

My test show that the battery was 12 VDC. and dropped till 10.5 when cranking. After the engine is started, the voltage was 14 VDC.

Note : You can also monitored other parameter when the engine is running..


Instructions to access the hidden OBC functions:

1. Hold Trip Reset while turning ignition key to on position
2. OBC should show "Test"
3. Use Trip Reset to select function 19.0 that unlocks all the features
4. Wait for display to show "Off"
5. Depress Trip Reset for 1/4 second and release it
6. With no delay press Trip Reset several times to select one of the following function