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I have Lexus gs450h 2010 with trouble code c1555 and steering wheel is hard to turn I already replaced steering ecu after calibrating work fine but for only 20 minutes and was unable to clear the same code that came back

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  • Cars & Trucks Master
  • 14,585 Answers

The ECU wasn't bad. The power steering unit is. The ECU compensated for the bad unit, until it wouldn't take it anymore. Replace the steering unit under the dash. Just a note though. I would do a wiring diagnostic first, to make sure all the wires are good.

Posted on Dec 07, 2014

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Posted on Jan 02, 2017

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SOURCE: Hard to turn the steering wheel?

on the astro vans they used a hydroboost power brake booster which is driven off the power sterring pump. If you are having brake and steering problems you should check to make sure your belt is still on if it is you probably need a new powersteering pump. You may also check your power sterring pump pulley.if this helps please rate

Posted on Dec 04, 2008

  • 1 Answer

SOURCE: Power steering

There is a loud squeak on the front of my 1991 ls 400. The squeak is near the alternator. Any one no what it is?

Posted on Jan 29, 2009

  • 2 Answers

SOURCE: 1997 ford f250 steering problem

it could be the front axle u-joint binding up. i had the same problem, and that's what it was. i put greaseable u-joints on both sides.

Posted on Mar 19, 2009

  • 97 Answers

SOURCE: when turning steering wheel to left very hard to turn

Sounds like the begining of a bad rack n pinion. We can eliminate the pump because the car turns to the right fine. There is no loss of fluid? The only thing left is the rack. It is a fairly commin issue. Use to call it morning sickness, The cars would be hard to turn in the morning or when first started but after running and warming up for a while they would start to work properly.

Posted on Jan 20, 2010

  • 14036 Answers

SOURCE: 1997 Jeep grand Cherokee limited 5.2l to

sound like lack of lubrication at the steering joints, your ball joints need greasing and make sure you bleed power steering system, check power steering fluid level.if low more like power steering system full of air need bleeding.

Posted on Jan 25, 2012

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1 Answer

2009 saturn aura hard steering I was told that the steering motor moduel was bad so I replaced it still hard to steere what could it be

Who told you , was it checked for DTC'S - diagnostic trouble codes ? Rather then just replacing parts why don't you take it to a qualified repair shop . Besides , the new module need's Programming and Setup , and a factory scan tool to do it .
Steering Position Sensor Calibration
Install the scan tool.
Turn ON the ignition, with the engine OFF.
Center the steering wheel.
With the scan tool select Special Functions.
Select Steering Position Sensor Calibration and press the Enter key. The scan tool screen will flash Calibration in Progress then display Calibration Complete.
Press the exit key.
Use the scan tool in order to clear any EPS DTCs.

Dec 13, 2016 | 2009 Saturn Aura

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My is electric power steering gs450h with code c1555 hard to turn

Motor relay circuit malfunction, check power steering ECU!

Dec 07, 2014 | Cars & Trucks

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The power steering on my 1992 Lexus LS400 has real bad hard dots when I turn rt or left. It gets real stiff & then the hard spot releases if I keep turning the steering wheel. I'm thinking it's the power...

this problem indicates a bad steering rack. the bushings in the rack are worn and have caused groves in the housing causing the binding. the only solution is to replace the steering rack. if a problem was the power steering pump it would not get easy when you turn the steering wheel further the problem would be there all the time.

Sep 20, 2014 | Cars & Trucks

1 Answer

How do i reset the esp ecu on my 2006 mercedez cls 500?

Please take your car to a professional to reset the ECU.

The difererence between having the dealer reset your ECU and you doing it is that the dealer only clears the faults, the ECU has a memory, so when you reset your ECU, it must basically re-calibarte itself and learn about all your car's systems from scratch.

1. Center your steering wheel.
2. Make sure your windows are all the way up
3. Make sure your sun roof is completely closed
4. make sure your parking brake is released
6. Turn off your stereo.
7. Make sure you have your stereo's Anti-theft code
8. Turn off your heat/AC blower
9. Turn off your lights
10. Make sure your doors are UNLOCKED.

Reset Steps:
Open your trunk and disconnect the negative side of your battery, wait 60 seconds and re-connect it.


Turn the key to position 2 (DO NOT START YOUR ENGINE)

1. Reseting your windows: Run windows down to the dwn/up full stop, then hold an extra 5 seconds (you might have to run these to the full up/dwn position an inch at a time, just keep going until you hit full open/closed position, then hold an additional 5 seconds). This re-enables the "auto up/dwn". Do the same thing with the sunroof. If it didn't work for the sunroof, then try this: remove the sunroof fuse, then re-insert it. then do the same procedure as above.

2. Turn on your blower and make both sides go to 72 deg. by pressing both up and down buttons at the same time. This should help calibrate the ECU

3. Turn on your stereo and enter your stereo code. if you do not have a code, you'll have to get it from the dealer. or perform endless searches on the web for a fix for that.

5. Turn all of the lights on and off, including your fog lights

6. Turn the key back to position 0.

7. Turn on your engine. You will get 2 malfunctions, your ABS and ESP, These systems must be calibrated. Calibrate your ABS and ESP systems by turning the steering wheel all the way to your RIGHT and then all the way to your LEFT. then bring it back to the center. The errors should go away from your instrument cluster.

8. Let your car run at idle for about 5 minutes and then take it for a spin. Remember your ECU is still getting all the readings from all the sensors, so drive slowly first then faster... and so on.. you are basically your ECU is re-learning your car.

Hope this helps, and remember, you are doing this at your own risk!

Sep 08, 2014 | 2006 Mercedes-Benz CLS 500

1 Answer

Code c1513 mean


The torque sensor converts the rotation torque input from the steering wheel into electric signals and sends them to the power steering ECU. C1513 is for a Power Steering System Torque Sensor 1 Malfunction, Torque Sensor Deviation Excessive.

Trouble Area:

  • Torque sensor (built into steering column assembly)

  • Power steering ECU

  • Connector
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    Since you already replaced the pump the only thing left is the rack and pinion.

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    What code c1555 means ?

    Crank position sensor failure is likely. No pulse from this sensor, and the ECU will not switch on the fuel pump, so no gas and no go. Cheap part to replace. THEY DO FAIL WITH AGE. If the car has done a high mileage. Replace it. Age due to constant heat exposure kills them.

    Oct 05, 2012 | 1998 Saab 900

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    Locate the turn signal flasher on highlander 2011

    first this is a component not common to failure, check your hazard switch firts it may be disconected or just binding, hit it few times on and off, if no change remove it to verify is conected fully, if you have done this an still not working then replace your flasher, remove lower trim cover under steering wheel, remove junction box asembly then remove pwer steerin ecu there it is just behind, to do all this set steering wheel straigth market just in case and remove negative terminal, good luck

    Oct 02, 2012 | 2010 Toyota Highlander Hybrid

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    Lexus 2006 IS250 awd is having problem with the

    it has electric power steering, take it to the dealer and ask if the service campaign has been done on the power steering rack. if not then it will be free and they will wash your car for you, fill up your gas tank and replace the steering rack and align the car. if it has been done then maybe they didnt reset the steering gear ecu.

    Oct 07, 2009 | 2006 Lexus Is 250

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    Power steering

    There is a loud squeak on the front of my 1991 ls 400. The squeak is near the alternator. Any one no what it is?

    Aug 15, 2008 | 1991 Lexus LS 400

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