Do Not Sell My Personal Information Jump to content


  • Join The Club

    Join the Lexus Owners Club and be part of the Community. It's FREE!

     

PLEASE HELP


Doriantaylor123
 Share

Recommended Posts

I have a 2002 lexus is200se

A few days ago I was driving and all electrics went down

The car still starts and i have headlights, hazard lights and dome light

I have no power to the windows, sunroof, radio, indicators, speedometer rev counter, back lights brake lights etc

I have checked every fuse and they are fine

If I red line the revs in neutral I get a little bit of power to the dash

 

Any ideas?

Link to comment
Share on other sites

I'd suggest the alternator is the 1st place to look - headlights, starter motor, hazards all seem to be wired as essential systems, radio, wndows etc as secondary systems. 

Check voltage across the Battery terminals with/without the engine running. It should read higher when the engines running

 

 

Link to comment
Share on other sites

It is possible that it's the alternator but somehow I doubt it.

The alternator only comes into play once the engine is running and it feeds all electrical circuits first, then if there's enough power left over (so to speak) it will charge the Battery.

If the Battery still has enough power to feed the starter motor (draws about 300A on cranking) and fire the engine, it should also power the radio etc. Does the radio work without the engine running?

I don't know of anything in a car that is intelligent enough to decide what needs power and what can do without it, so my money is still on a major fuse. Having said that though, how have you tested all the 'normal' fuses - just by looking at them or by checking continuity with a multimeter? Multimeter is the only reliable way really.

EDIT: Also possibly a bad earth somewhere. Take off and clean both the main earth strap from Battery to body and also the engine earth strap too.

Link to comment
Share on other sites

Have you also checked the engine bay fuses, these tend to be a higher current rating and power multiple circuits, a common failure is the alternator fuse usually rated around 120A, this type of fused is hardwired so you cannot simply pull them out to check but the top cover is clear so you can see if the wire is broken inside.

Link to comment
Share on other sites


Latest Deals

Lexus Official Store for genuine Lexus parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share







Lexus Owners Club Powered by Invision Community


eBay Disclosure: As the club is an eBay Partner, the club may earn commision if you make a purchase via the clubs eBay links.

DISCLAIMER: Lexusownersclub.co.uk is an independent Lexus forum for owners of Lexus vehicles. The club is not part of Lexus UK nor affiliated with or endorsed by Lexus UK in any way. The material contained in the forums is submitted by the general public and is NOT endorsed by Lexus Owners Club, ACI LTD, Lexus UK or Toyota Motor Corporation. The official Lexus website can be found at http://www.lexus.co.uk
×
  • Create New...