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#1
05-23-2015, 03:27 PM
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W210 Cruise Control
I installed a 603 IP in my 1996 N/A 606.
Everything about it is good except I lost my cruise control. I am wondering if anyone knows enough about the drive-by-wire system, and the cruise control system, in the W210 to let me know if there is a signal produced by the W210's system that can be captured and used to control a 603's electro-mechanical cruise control unit ?
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Greg 2012 S350 BlueTEC 4Matic 2007 ML 320 CDI 2007 Leisure Travel Serenity 2006 Sprinter 432k 2005 E320 CDI 1998 SLK230 (teal) 1998 SLK230 (silver) 1996 E300D 99k, 30k on WVO Previous: 1983 240D, on WVO 1982 300D, on WVO 1983 300CD, on WVO 1986 300SDL 237k, 25k on WVO (Deerslayer) 1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix 1983 380 SEC w/603 diesel, 8k on WVO 1996 E300D 351k, 177k on WVO 
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#2
05-23-2015, 05:12 PM
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Pretty sure the system needs electrical control over the fuel pump - its one of the reasons I might not fit an OM603 pump to my OM606 engine as you lose some functionality.
Did you think the cruise control would work after you disconnected the ECU control from the fueling??
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UK spec Mercedes W210 E300 Turbodiesel wagon - OM606.962 with 722.6 transmission - rust free!
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#3
05-23-2015, 09:30 PM
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There are 2, 4 wire, electrical harnesses that go to the IP.
One goes to the replaceable fuel control valve. One goes to the back of the IP. I think that the electro-mechanical cruise control unit uses 4 wires. I was wondering if either of the 4 wire sets send a signal that could be used for the cruise unit when the cruise control is activated in the car.
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Greg 2012 S350 BlueTEC 4Matic 2007 ML 320 CDI 2007 Leisure Travel Serenity 2006 Sprinter 432k 2005 E320 CDI 1998 SLK230 (teal) 1998 SLK230 (silver) 1996 E300D 99k, 30k on WVO Previous: 1983 240D, on WVO 1982 300D, on WVO 1983 300CD, on WVO 1986 300SDL 237k, 25k on WVO (Deerslayer) 1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix 1983 380 SEC w/603 diesel, 8k on WVO 1996 E300D 351k, 177k on WVO
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#4
05-24-2015, 07:06 AM
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The 2 devices on the 606 DBW IP are a sensor (rack position feedback) and an actuator (that moves the rack).
The ECU drives the rack actuator and uses the position sensor for feedback. The actuator signals are just a "drive the rack more" or "drive the rack less" type of thing. Drive by wire cruise is just an extended function of the ECU. Instead of the ECU trying to modulate the fueling level given the pedal input, it modulates the fuel level to maintain a preset road speed. You'll notice in a properly functioning 210 that the pedal does not move in response to the cruise control calling for more fuel. Not like it does on a car where the pedal mechanism is actuated by the cruise control. This also means that the cruise control on a 210 is rock solid. There is no mechanical slop from the external actuator or linkage like in a 123/124. This all happens within the ECU and there is nothing that can be gleaned from the signals to the IP that will help you with external cruise control operation. I think your best bet would be to send your 606 pump out for a rebuild and put it back to stock if you want your cruise to work.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech
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#5
05-24-2015, 09:03 AM
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Thank you for the answer to my question.
Cruise control is not worth the cost of rebuilding the IP. If I really want CC, I will just have to add the complete system. That would be more trouble than it's worth on a car that I am trying to use up before it rusts out. It is almost used up. It owes me nothing.
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Greg 2012 S350 BlueTEC 4Matic 2007 ML 320 CDI 2007 Leisure Travel Serenity 2006 Sprinter 432k 2005 E320 CDI 1998 SLK230 (teal) 1998 SLK230 (silver) 1996 E300D 99k, 30k on WVO Previous: 1983 240D, on WVO 1982 300D, on WVO 1983 300CD, on WVO 1986 300SDL 237k, 25k on WVO (Deerslayer) 1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix 1983 380 SEC w/603 diesel, 8k on WVO 1996 E300D 351k, 177k on WVO
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