http://www.auto-professionals.co.uk/ Thu, 07 May 2026 01:02:58 +0000 MyBB http://www.auto-professionals.co.uk/showthread.php?tid=24358 Wed, 25 Jun 2025 11:07:35 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=24358
So... Let me pick up your brains for a moment now. I have a situation here with a '08 451 MHD that I can't seem to find a way to solve.
Most of the times, the car won't start. It will try to, but it will seem like there's no fuel/spark and it won't start. Now and then, it will work perfectly at first crank.

As of now, the fuel pump (full pack) was changed, different ECU was tried (same numbers, after cloning the original one), another SAM was also tried
(ipsis verbis), both engine sensors were changed (camshaft and crankshaft). Also checked the wiring to the fuel pump, everything seems fine.

What now, any idea? I'm up to (almost) everything. Please let me know your thoughts.

Thank you in advance!
Cheers. ]]>
So... Let me pick up your brains for a moment now. I have a situation here with a '08 451 MHD that I can't seem to find a way to solve.
Most of the times, the car won't start. It will try to, but it will seem like there's no fuel/spark and it won't start. Now and then, it will work perfectly at first crank.

As of now, the fuel pump (full pack) was changed, different ECU was tried (same numbers, after cloning the original one), another SAM was also tried
(ipsis verbis), both engine sensors were changed (camshaft and crankshaft). Also checked the wiring to the fuel pump, everything seems fine.

What now, any idea? I'm up to (almost) everything. Please let me know your thoughts.

Thank you in advance!
Cheers. ]]> http://www.auto-professionals.co.uk/showthread.php?tid=23678 Fri, 04 Feb 2022 15:33:25 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=23678 This car came for cooling issue, someone else from another shop made the fan direct, upon turning the key to ON position, owner want the car to work original. Got a used front SAM from junk and got the original dump clone and wrote the dump to the junk yard SAM. Now when I command the fan with scan tool, the fan come on. Had them car parked with no battery on for about 3 weeks, now wanted to move the car, I got it jump started with another battery, fan turn on and went off during jump start. Now when I command the fan with scan tool, fan won’t come on again. When I switch on the A/C fan won’t come one.
I have checked the fuses, all is right.

Please can someone advice how to repair this SAM?
This SAM has all relays on it PCB. There is none outside separate from the SAM.
Is need help or else I must get another SAM again which am not ready.

Thanks.]]> This car came for cooling issue, someone else from another shop made the fan direct, upon turning the key to ON position, owner want the car to work original. Got a used front SAM from junk and got the original dump clone and wrote the dump to the junk yard SAM. Now when I command the fan with scan tool, the fan come on. Had them car parked with no battery on for about 3 weeks, now wanted to move the car, I got it jump started with another battery, fan turn on and went off during jump start. Now when I command the fan with scan tool, fan won’t come on again. When I switch on the A/C fan won’t come one.
I have checked the fuses, all is right.

Please can someone advice how to repair this SAM?
This SAM has all relays on it PCB. There is none outside separate from the SAM.
Is need help or else I must get another SAM again which am not ready.

Thanks.]]> http://www.auto-professionals.co.uk/showthread.php?tid=23247 Fri, 13 Nov 2020 12:16:41 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=23247 I went into Kombi coding in Developer Mode and put with additional instrument, but it doesn't work. Do you know if there is anything else to code?
Thanks in advance.]]> I went into Kombi coding in Developer Mode and put with additional instrument, but it doesn't work. Do you know if there is anything else to code?
Thanks in advance.]]> http://www.auto-professionals.co.uk/showthread.php?tid=23150 Fri, 11 Sep 2020 11:20:34 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=23150
I have a situation here and need some help.
2002 Smart ForTwo Cabrio, 599cc. While driving, ABS, Trust and the handbrake light up and the gear change doesn't work properly, and doesn't engage reverse at all. Not always, not in any particular situation, not hot or cold. Just randomly! Sometimes they go out on their own while driving, sometimes only after turn it off and start it again.

Got the following errors:

- 3D: Both rear rpm sensors
- 3E: Both front rpm sensors
- 0D: No CAN message from control unit N47/7 (ABS control module)
- 4C: 'Rough road detection' signal (by comparing wheel speeds)

Tested all four RPM sensors with DAS, all work properly. ABS reluctor rings have no visible damage. Cleaned both the ABS module and ECU connectors.
Any idea?
Thank you in advance!

Cheers. ]]>
I have a situation here and need some help.
2002 Smart ForTwo Cabrio, 599cc. While driving, ABS, Trust and the handbrake light up and the gear change doesn't work properly, and doesn't engage reverse at all. Not always, not in any particular situation, not hot or cold. Just randomly! Sometimes they go out on their own while driving, sometimes only after turn it off and start it again.

Got the following errors:

- 3D: Both rear rpm sensors
- 3E: Both front rpm sensors
- 0D: No CAN message from control unit N47/7 (ABS control module)
- 4C: 'Rough road detection' signal (by comparing wheel speeds)

Tested all four RPM sensors with DAS, all work properly. ABS reluctor rings have no visible damage. Cleaned both the ABS module and ECU connectors.
Any idea?
Thank you in advance!

Cheers. ]]> http://www.auto-professionals.co.uk/showthread.php?tid=22385 Sat, 17 Aug 2019 07:03:43 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=22385 Need help for a Smart Fortwo 0.6 petrol of 2002.
When the car is in the sun the central lock does not work and the car does not start.
If it gets in the shade or inside the workshop the system works normally.
Someone has any solution? Diagnosis has no errors.
Thank you.]]> Need help for a Smart Fortwo 0.6 petrol of 2002.
When the car is in the sun the central lock does not work and the car does not start.
If it gets in the shade or inside the workshop the system works normally.
Someone has any solution? Diagnosis has no errors.
Thank you.]]> http://www.auto-professionals.co.uk/showthread.php?tid=21805 Sun, 23 Dec 2018 08:58:43 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=21805 I have one Smart 451 which doesn't seem to work the brake hold when stops.
There is no fault code anywhere.
Did anyone have one problem like this in past?

Merry Christmas to all!!!]]> I have one Smart 451 which doesn't seem to work the brake hold when stops.
There is no fault code anywhere.
Did anyone have one problem like this in past?

Merry Christmas to all!!!]]> http://www.auto-professionals.co.uk/showthread.php?tid=21509 Sat, 22 Sep 2018 12:56:55 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=21509
I have DTC code P1700 in Gearbox and Star Diagnosis wants to make update of TCU. Is there possibility to do that without online account?]]>
I have DTC code P1700 in Gearbox and Star Diagnosis wants to make update of TCU. Is there possibility to do that without online account?]]> http://www.auto-professionals.co.uk/showthread.php?tid=21078 Sun, 06 May 2018 15:53:57 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=21078
I need somebody who can help to find a Smart Electric BMU connector pinout.
It is a 6x4 plus 2x4 matrix connector on the battery pack.
HV Battery E18-1, OEM: A789 340 65 01

Low_Voltage-1.jpg
File Type:
Downloaded:	10 times
Size:	92.78 KB

]]>
I need somebody who can help to find a Smart Electric BMU connector pinout.
It is a 6x4 plus 2x4 matrix connector on the battery pack.
HV Battery E18-1, OEM: A789 340 65 01

Low_Voltage-1.jpg
File Type:
Downloaded:	10 times
Size:	92.78 KB

]]> http://www.auto-professionals.co.uk/showthread.php?tid=18971 Mon, 28 Nov 2016 16:28:47 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=18971 I would appreciate some help if possible. I have the car detailed below, came in for several electrical issues including cutting out and single line on dash, fuel and temp gauges flashing (CAN fault). Colleagues sent SAM away for test/repair, they said no issue with it but fixed a few common areas (I do not know what). Refitted, no erratic behavior but CAN fault remains, permanent non start.
I looked at car and found fault with CAN in engine ECU.

Second hand virginised ECU located, exact same part no, HW no, FD no.
Swapped 24c02 but fault remained (I believe part of immo in flash also).
Swapped back and put 'new' virginised ECU on car, now we have key symbol.
My Star Diagnosis is away being updated so borrowed friend's old one and coded in key.
Tried to do initial startup of engine ECU but wanted to do SCN coding so cancelled.
Now have N displayed but no crank. Live data shows that immo etc all OK for start.
Crank signal going into SAM but not coming out to starter. Took SAM apart and tested relay and power track OK.
Power supplied to starter cranks but no start, crank signal present. Spark but no injector signal. Fuel pump runs if I power starter.
No codes in engine ECU. One code in SAM for comms with cluster.

Am I looking at an issue due to SCN coding?
Does it matter that I didn't write VIN to virginised ECU?

It is strange that I have no apparent immo fault, no crank or injectors but crank signal and spark are there.

Any help greatly appreciated.

Smart City
0.7 Coupe 2003
Petrol Automatic
SILVER
VRM:SMART CITY PASSION 61 AUTO (450)
Engine:
14130519372 160.92
698cc 6V 61 BHP
VIN: WME4503322J049768
Body Type: Coupe
Fuel Type: Petrol
Transmission: Automatic
Co2 / E Rating: 116
Registered: 14/11/2003

ECU part no 0010020V001
0261205006]]> I would appreciate some help if possible. I have the car detailed below, came in for several electrical issues including cutting out and single line on dash, fuel and temp gauges flashing (CAN fault). Colleagues sent SAM away for test/repair, they said no issue with it but fixed a few common areas (I do not know what). Refitted, no erratic behavior but CAN fault remains, permanent non start.
I looked at car and found fault with CAN in engine ECU.

Second hand virginised ECU located, exact same part no, HW no, FD no.
Swapped 24c02 but fault remained (I believe part of immo in flash also).
Swapped back and put 'new' virginised ECU on car, now we have key symbol.
My Star Diagnosis is away being updated so borrowed friend's old one and coded in key.
Tried to do initial startup of engine ECU but wanted to do SCN coding so cancelled.
Now have N displayed but no crank. Live data shows that immo etc all OK for start.
Crank signal going into SAM but not coming out to starter. Took SAM apart and tested relay and power track OK.
Power supplied to starter cranks but no start, crank signal present. Spark but no injector signal. Fuel pump runs if I power starter.
No codes in engine ECU. One code in SAM for comms with cluster.

Am I looking at an issue due to SCN coding?
Does it matter that I didn't write VIN to virginised ECU?

It is strange that I have no apparent immo fault, no crank or injectors but crank signal and spark are there.

Any help greatly appreciated.

Smart City
0.7 Coupe 2003
Petrol Automatic
SILVER
VRM:SMART CITY PASSION 61 AUTO (450)
Engine:
14130519372 160.92
698cc 6V 61 BHP
VIN: WME4503322J049768
Body Type: Coupe
Fuel Type: Petrol
Transmission: Automatic
Co2 / E Rating: 116
Registered: 14/11/2003

ECU part no 0010020V001
0261205006]]> http://www.auto-professionals.co.uk/showthread.php?tid=17153 Fri, 29 Jan 2016 17:31:54 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=17153

I have a situation with a Smart ForTwo (450) here, and I need your help.

Everytime I turn the key on, both the fuel symbol (with an electric pin on the end), the temperature and one line on the display blinks. Unstoppable.
Everything works, the car drives with no problems, but I can't figure out what's causing it. Here it is:



It was ok just until the battery died (interior light on). Someone connected the power cables to another car, put it to work, and that's all.
It's blinking since then.
Any idea? Thank you in advance!

Cheers. ]]>

I have a situation with a Smart ForTwo (450) here, and I need your help.

Everytime I turn the key on, both the fuel symbol (with an electric pin on the end), the temperature and one line on the display blinks. Unstoppable.
Everything works, the car drives with no problems, but I can't figure out what's causing it. Here it is:



It was ok just until the battery died (interior light on). Someone connected the power cables to another car, put it to work, and that's all.
It's blinking since then.
Any idea? Thank you in advance!

Cheers. ]]> http://www.auto-professionals.co.uk/showthread.php?tid=15403 Fri, 22 May 2015 09:42:37 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=15403 I am trying to program a control unit offline (EDG from smart forfour cdi) with DAS and it seems that the ECU has already been programmed with the latest version. Is there a way to write the same software again?

I get the following "error": No newer software found.
I am asking in the MB subforum because I remember I had the same problem a while back with a CLK engine control unit.

Thank you.]]> I am trying to program a control unit offline (EDG from smart forfour cdi) with DAS and it seems that the ECU has already been programmed with the latest version. Is there a way to write the same software again?

I get the following "error": No newer software found.
I am asking in the MB subforum because I remember I had the same problem a while back with a CLK engine control unit.

Thank you.]]> http://www.auto-professionals.co.uk/showthread.php?tid=14981 Tue, 31 Mar 2015 16:56:38 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=14981

I'm having some troubles and decided to ask your help...

So, I have a '03 Smart ForTwo Cabrio in which I'm supposed to fix the roof.
It is working, just not perfectly, due to the fact that the cables slip during it's function. Until here, all good...
Already have the repair kit from Mercedes in hand. Now getting to the 'good part'...

I borrowed an Mercedes tool from a friend which is supposed to help with this work. I've been staring at it for a while, but already found out how it's supposed to work, almost everything. It is already applied on the car, in place, except two parts which I can't seem to get where they belong. I know how I'm supposed to roll without this tool, but I'd really rather take advantage of it, since I have it with me.

The tool reference is 0011791V001000000. Can someone with a good working WIS/ASRA, to send me any instructions on how it is supposed to work? I'd really appreciate!

Thank y'all in advance.

Cheers! ]]>

I'm having some troubles and decided to ask your help...

So, I have a '03 Smart ForTwo Cabrio in which I'm supposed to fix the roof.
It is working, just not perfectly, due to the fact that the cables slip during it's function. Until here, all good...
Already have the repair kit from Mercedes in hand. Now getting to the 'good part'...

I borrowed an Mercedes tool from a friend which is supposed to help with this work. I've been staring at it for a while, but already found out how it's supposed to work, almost everything. It is already applied on the car, in place, except two parts which I can't seem to get where they belong. I know how I'm supposed to roll without this tool, but I'd really rather take advantage of it, since I have it with me.

The tool reference is 0011791V001000000. Can someone with a good working WIS/ASRA, to send me any instructions on how it is supposed to work? I'd really appreciate!

Thank y'all in advance.

Cheers! ]]> http://www.auto-professionals.co.uk/showthread.php?tid=10968 Wed, 09 Apr 2014 20:54:08 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=10968
I can't get any comms with a 450 0.7l (built 2002/2003) engine ECU with X431 Diagun or Autocom/Delphi 2013.1. Other modules ok, but not ECU.
Is this normal and you need the Mercedes gear only for these toy cars or does this car have a problem?

All help appreciated. ]]>
I can't get any comms with a 450 0.7l (built 2002/2003) engine ECU with X431 Diagun or Autocom/Delphi 2013.1. Other modules ok, but not ECU.
Is this normal and you need the Mercedes gear only for these toy cars or does this car have a problem?

All help appreciated. ]]> http://www.auto-professionals.co.uk/showthread.php?tid=9175 Tue, 14 Jan 2014 01:07:01 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=9175 I'm having a problem with an 2010 Smart 451.
The gears are blinking on instruments, and the car doesn't have any kind of error stored!
I've heard that i need to update software. Which tool is good for this job?
How can i solve this?
Thx,]]> I'm having a problem with an 2010 Smart 451.
The gears are blinking on instruments, and the car doesn't have any kind of error stored!
I've heard that i need to update software. Which tool is good for this job?
How can i solve this?
Thx,]]> http://www.auto-professionals.co.uk/showthread.php?tid=7352 Sun, 10 Nov 2013 23:28:52 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=7352 http://www.auto-professionals.co.uk/showthread.php?tid=7178 Mon, 28 Oct 2013 20:21:28 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=7178 I have the following problem with an 2001 smart (450).
When i press the unlock or lock button on the key the car starts to blink in emergency lights and the little motor for opening and closing the door where u put gas it's doing tic tac tic tac like the lights. If i remove the battery the car stops doing this.
In Mercedes they told me that i have to change SAM module.
I've change it with used one, the cars starts, everything it's going but still have the same problem.
If i press the release trunk button, the trunk doesn't open until i start the front wipes and pressing 4,5 times the button.

Anyone that have the minimum idea where to begin?]]> I have the following problem with an 2001 smart (450).
When i press the unlock or lock button on the key the car starts to blink in emergency lights and the little motor for opening and closing the door where u put gas it's doing tic tac tic tac like the lights. If i remove the battery the car stops doing this.
In Mercedes they told me that i have to change SAM module.
I've change it with used one, the cars starts, everything it's going but still have the same problem.
If i press the release trunk button, the trunk doesn't open until i start the front wipes and pressing 4,5 times the button.

Anyone that have the minimum idea where to begin?]]> http://www.auto-professionals.co.uk/showthread.php?tid=6999 Wed, 16 Oct 2013 14:57:13 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=6999 http://www.auto-professionals.co.uk/showthread.php?tid=6742 Sat, 28 Sep 2013 17:30:10 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=6742 http://www.auto-professionals.co.uk/showthread.php?tid=6640 Sat, 21 Sep 2013 16:05:42 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=6640 I was playing around with some old ecus for 450 and i decided to test my cloned star and see if updating works. Well it doesn't... now both ecus are non functional. I could fix them with other tools but I wanted to know if I can get this function to work or if anyone had issues with control unit programming.
I'm using Xentry 01.2012

Also after update fails it reads software version FFFFFFF]]> I was playing around with some old ecus for 450 and i decided to test my cloned star and see if updating works. Well it doesn't... now both ecus are non functional. I could fix them with other tools but I wanted to know if I can get this function to work or if anyone had issues with control unit programming.
I'm using Xentry 01.2012

Also after update fails it reads software version FFFFFFF]]> http://www.auto-professionals.co.uk/showthread.php?tid=6638 Sat, 21 Sep 2013 11:47:30 +0000 http://www.auto-professionals.co.uk/showthread.php?tid=6638 till ECU reset done by activation. Then it has been done, but now without any errors SRS is on. Who knows how to solve?
Thanks in advance.]]> till ECU reset done by activation. Then it has been done, but now without any errors SRS is on. Who knows how to solve?
Thanks in advance.]]>