Mercedes-Benz Forum banner

The nine millionth first-gear start question

15083 Views 63 Replies 27 Participants Last post by  ripgriffith
OK, I am confused.

I have a left-hand drive Euro-spec 560SEL. It has the sport "S" and economy "E" transmission selector switch.

If I get the MB factory FGS module and harness, and plug them in, what will happen?

Will it always start off in 1st gear? Or do the "S" and "E" selectors have some impact, meaning if I select "E" will it then start in 2nd gear?

And same question for US car without the "S" and "E" trans selector switch. If I plug in module and harness, will it always start in 1st and that's it?

Thanks in advance.

Bruce
21 - 40 of 64 Posts
The E/S switch is separate, not included with any FGS module.

I think it's a Euro only thing.

- Steve
mine didn't come with one. where could I get one, and how easy is it to install? meaning the E/S switch.
and the E/S switch changes shift points right? My wife has an Isuzu Axium with a similar switch which came stock. I like it alot. would love to get one working in my car at some point.
Bergwerks in Los Angeles (no longer in business) used to sell these FGS kits. I bought one from them about 5 or 6 years ago, for the US spec. 560SEC, and fellows, I can tell you, having had the standard 2nd gear start the car comes with, and then upgraded to this, there is
a REAL performance difference with the FGS that you can definately feel when you take off from a standing stop.

I definately recommend these as part of the performance package for anyone interested in total performance, and even as a stand alone add on, they really make a difference.

I had no idea about these, and at the time wondered if I was wasting my money on this, but it's definately worth it, I am sorry I didn't buy a few more of them, so I could pass them on to you guys years later.
1st gear start

Ok peeps, please just stop and answer me as I am totally confused.

Q 1: What is the difference between shifitng to 1st manually when taking off, rather than having a swtich that does that automatically. Isn't it the same? Isn't 1st gear a 1st gear?

Q 2: If there is difference, how so?

Q 3: What is the advatage?

Q 4: There are US shifters (1st gear start manually) and there are 1st gear starts on Euro cars. I get that, now, is there something else different? Economy and standart? Please get me out of the dark....
DarkOneSK said:
mine didn't come with one. where could I get one, and how easy is it to install? meaning the E/S switch.
and the E/S switch changes shift points right? My wife has an Isuzu Axium with a similar switch which came stock. I like it alot. would love to get one working in my car at some point.
The E/S switch does not change anything in the transmission, nor does it do anything to the shift points.

The programmability you refer to is only found in later model transmissions.

On our cars the E/S switch is simply a clean way to integrate an on/off switch for the 1st Gear Start module.

US cars never came with this switch. Euro cars with a factory 1st Gear Start module incorporated this switch for this exact purpose.

I got one with the 1st Gear Start kit I got from BergWerks. Works well and looks great.

Instead of using the E/S switch, you can simply install an On/Off switch in the coin tray.

Hope this helps.
See less See more
ChopTop250SE said:
Ok peeps, please just stop and answer me as I am totally confused.

Q 1: What is the difference between shifitng to 1st manually when taking off, rather than having a swtich that does that automatically. Isn't it the same? Isn't 1st gear a 1st gear?

If I understand it correctly, even if you engage "B" you car will idle in 2nd gear and switch to 1st gear as soon as you get off the brake and hit the accelerator. This takes a split-second. With the 1st Gear Start module engaged, the car will downshift to 1st gear at 1 mph (it's programmable) and will be idling in 1st.

Q 2: If there is difference, how so?

With the 1st Gear Start module, you'll always have 1st gear from standstill. No need to hit the gear shifter.

Q 3: What is the advatage?

The BergWerks 1st Gear Start came in two versions. The Basic had limited programmability, but did all the stuff you wanted, downshift to 1st before stopping and always starting off in 1st. The full-featured version had two different programs to choose from. One for normal driving, downshift to 1st at 1 mph and upshift to 2nd at 7 mph (if I remember correctly). The second mode could have a different shift sequence with downshift to 1st at, say, 7 mph and to hold 1st to 20 mph.
A bit of overkill in my opinion, because if you floor it, the transmission will hold the gears until the redline is reached anyway.

Q 4: There are US shifters (1st gear start manually) and there are 1st gear starts on Euro cars. I get that, now, is there something else different? Economy and standart? Please get me out of the dark....

The E/S switch came on Euro cars that had the 1st gear start from the factory. S is Standard and the car will use the 1st gear. E is Economy and will start from 2nd.
Hope this helps.
Ok...On my car, when I shift to first it shifts to first right away without taking off. Standing still idling, when I shift to first- it is on first. I don't know about other US w126's but this is 100% true on mine. I have no idea if it was modified somehow to be like this, but that's how mine is. So if this is the case, there is no advantage of a first gear swtich start over mine?
ChopTop250SE said:
.... there is no advantage of a first gear switch start over mine?
Well, the 1st Gear start is automatic. No need to fiddle with the gear shifter. :)


The 1st Gear Start Module from BergWerks is also programmable. You can select the downshift and upshift speeds depending on your preference. Downshift to 1st at 1 mph and upshift to 2nd at 7 mph was the pre-set option, but you can change it for a more aggressive shift pattern such as downshift to 1st at 5 mph and upshift to 2nd at 15 mph.

The MB 1st Gear Start module does not have this programmability.

Hope this helps.
AxelWulff said:
The E/S switch does not change anything in the transmission, nor does it do anything to the shift points.

The programmability you refer to is only found in later model transmissions.

On our cars the E/S switch is simply a clean way to integrate an on/off switch for the 1st Gear Start module.

US cars never came with this switch. Euro cars with a factory 1st Gear Start module incorporated this switch for this exact purpose.

I got one with the 1st Gear Start kit I got from BergWerks. Works well and looks great.

Instead of using the E/S switch, you can simply install an On/Off switch in the coin tray.

Hope this helps.
so the bergwerks one looks like the way to go then. What do you have your shift points at? Just curious.
DarkOneSK said:
so the bergwerks one looks like the way to go then. What do you have your shift points at? Just curious.
I use the "Off" switch quite a bit. :eek:

In stop-and-go traffic the 1st gear is neither smooth nor comfortable, so in heavy traffic I always turn it off.

In the wet I always turn it off to avoid wheelspin (I have an open diff....).

Most of the time I use the standard BergWerks shift points; downshift to 1st at 1 mph and upshift to 2nd at 7 mph.

Occasionally I find a higher downshift point, about 5 mph, to be fun, but for fast starts you'll engage the kick-down switch and the tranny will hold the gears until redline, regardless of whether you have a 1st Gear Start module or not.
hmmmmm...I want it...Where do I get the bergwerks module? How much? Who installs it and how hard is it to install?
Bergwerks is out of business, so you'll probably have to hope for a used one to become available, although they rarely pop up on eBay as new...likely from people who balked at the second part of your question.

PS: Not Bergwerks, but... http://www.benzworld.org/forums/w126-s-se-sec-sel-sd-sdl-class/1312895-fgs-sale-ebay.html

PPS: Link goofs up, but the thread is recent...scroll down on the forum.
The E/S switch from the manual

This is what the manual says about the E/S switch. It would appear to change the shift points.

Attachments

See less See more
I don't know if I should trust that product or not....
3
All greetings and sorry for my bad English !
I will try to explain .....

The principle of work of all existing modules the FGS is same !
We have original Mercedes,BergWercks and FGSSwitch. But they all do same they are trace speed of the car and depending
of it they are turning on "Kickdown", or switch it off.
If you have got Fgs installed in you car at the
moment When you start your engine voltage moves it to KickDown and car will start from first gear. (you will get similar result when you start from position "B").
When you star moming off from first gear and when you achieve pre-seted speed in FGS module, the voltage from KickDown will be removed
and then car will shift to second gear.
When you brake till pre-seted speed in module , the voltage to KickDown renews, and then first gear turns on.
In the original MB module there is no opportunity to change speed levels.
In BergWercks module you have choice of two possible variants: Downshift to 1st at 1 mph and Upshift to 2nd at 7 mph,
or Downshift to 1st at 5 mph and Upshift to 2nd at 15 mph.
In our FGSSwitch pre-set Downshift to 1st at 6 mph and Upshift to 2nd at 6 mph.But when you connect the module to a laptop
you can change parameters of speed in a range 1-24 mph c at a step 1 mph!According to your preferences and style of driving!


In case of setup FGSSwitch on the European versions of cars you can use switch S/E for return to start from the second gear.
It will work so: S - start with the 1st gear, E - start with the 2nd gear.


In case of setup FGSSwitch on the American versions of cars you can use Child Window Switch for return to start from the second gear.
It will work so: Blocking is switched off - start with the 1st gear, included - start with the 2nd gear.


But main advantage FGSSwitch: measurement of dynamic characteristics of the vehicle (MDC.) MDC function begins time count automatically, from the receiving of the first pulse of ABS sensor. The user can choose one of three modes of measurement:
- Acceleration time 0-100 km/h;
- Acceleration time 0-200 km/h;
- Quarter mile pass time.
The gained information can be displayed on user's PC.
The time measurement occurs constantly, in automatic mode, without dependence of whether 1st gear start or 2nd gear start.
Accuracy of measurement is 0.01 sеc.
See less See more
MitchellBenz said:
I notice that there is no link to the FGSSwitch website in this thread, where you can order it online, so here it is...

FGSSwitch
Does this thing work in an '86 420 SEL?
When position 'B' is selected at standstill or speed less than 7mph, transmission will be in 1st gear immediately.

talbir
Well, I stand corrected on that one; the E/S Switch does affect the shift points.

Does that mean the Euro transmissions have different valve bodies from the US transmissions?

Modern transmissions have sensors and processors to activate shift points, but ours are fairly low on electronic content. It would seem to me that only a different valve body could achieve the effect described in the owner's manual.



See less See more
Yes, the Euro trannies have different ratios and valve bodies to the US spec.

talbir
Seeing that the FGS system sold for $275.... I can't see how having that option is worth that price:confused: It was however worth it to someone. Anyone from this forum have it installed?
21 - 40 of 64 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top