Speed sensitive steering

[DougMb]

Hi. Can anybody tell me if my 2006 Cls 320 has speed sensitive steering on it.

 

[Blobcat]

Hi. Can anybody tell me if my 2006 Cls 320 has speed sensitive steering on it.

I expect so as it's based on the W211 chassis and my face-lift late 06 E320 CDI had it as standard.

 

[M80]

VIN Decoder for Mercedes-Benz - LastVIN.com

 

[DougMb]

I expect so as it's based on the W211 chassis and my face-lift late 06 E320 CDI had it as standard.

Thanks for the reply. Its just that i had some mounts put on the car and ever since the steering is heavier at slow speeds and you need a bit of muscle to turn the wheel when its stationary. My son has a sl500 and you can turn the wheel with one finger.
Apparently you cant buy new solenoids for them so i've been hearing ?

 

[M80]

Isn't there a plug on the rack that lightens the steering?
Has it been disturbed, or the cable to it damaged?

 

[DougMb]

Isn't there a plug on the rack that lightens the steering?
Has it been disturbed, or the cable to it damaged?

Yea a speed sensitive soleniod.

 

[mersum1es]

Rear speed sensor malfunction will stiffen parametric steering too.

 

[M80]

Yea a speed sensitive soleniod.

I've no experience of working on these but seem to remember similar on my previous C320 (2005). So I guess it gets a signal from the ECU to lighten up below what ever speed.
'If' that is a signal applied at low speed can you check it's getting that when stationary? Of course if it's applied when above a speed that's more difficult.
And if it's a solenoid on the rack a multimeter on K ohms should check that for continuity.

 

[DougMb]

I've no experience of working on these but seem to remember similar on my previous C320 (2005). So I guess it gets a signal from the ECU to lighten up below what ever speed.
'If' that is a signal applied at low speed can you check it's getting that when stationary? Of course if it's applied when above a speed that's more difficult.
And if it's a solenoid on the rack a multimeter on K ohms should check that for continuity.

 

[DougMb]

I've booked it in at Halfords for one of their free steering tests now so hopefully the fault will show up on their diagnostic machine.
ive just been looking online for a new solenoid but although there is plenty on ebay i cant find one for my car.

 

[M80]

Parts usually have specific number to identify them, that can often help to find one via google.
It might also help if you ring Mercedes parts dept with it.

 

[DougMb]

VIN Decoder for Mercedes-Benz - LastVIN.com

I put in my Vin number and got a list up but no mention of Speed sensors.

 

[M80]

Parameter steering?

 

[Blobcat]

Parameter steering?

Speed sensitive so less assistance the faster you go

 

[M80]

Speed sensitive so less assistance the faster you go

Yep that's what my C320 had.
As a solenoid, as has been suggested to be on the rack, is on / off, it would suggest that the signal is analogue to a valve. Otherwise a sudden shut off of assistance would be felt.

 

[mersum1es]

I put in my Vin number and got a list up but no mention of Speed sensors.

Of course you have speed sensors, VIN code tells if you have speedsensitive/parametric steering....

 

[DougMb]

Of course you have speed sensors, VIN code tells if you have speedsensitive/parametric steering....

Sorry but I couldn't find it on the list