rattyvee Posted August 26, 2011 Report Share Posted August 26, 2011 Hi everyoneI bought my girlfriend a 1999 SDi 1.7 lupo about a month ago for what i thought was a bargain price. I thought at the time 'I'll spend the next 2 weeks discovering why it was so cheap'now we know ! it's pretty though ok , having repaired both lock mechanisms with the usual ebay kitsreplaced the clutch and gear gate rodtightened up the loose pendulum support ...I'm left with :a flashing red exclamation brake warning lamp on the dash : comes on when I hit 10 mph accompanied by 3 bleepsfluid level looks ok, front pads plenty wear left (any sensors on the rear drums ?) only mystery is a plastic pipe leaving the top pf the brake fluid reservoir that's had a metal tube crimped off to block it ! what should that have instead ? I've looked on elsawin and can't see any diagram of the fluid reservoir)anybody want to help a newby who's stumped ?cheers ! Quote Link to comment Share on other sites More sharing options...
Blitzerman Posted August 26, 2011 Report Share Posted August 26, 2011 Is the earth connected to the handbrake? kinda thinking that maybe it isnt, causing the brake like to flash and bleep at you? But yeah check the handbrake wires are connected could be that simple Quote Link to comment Share on other sites More sharing options...
rattyvee Posted August 26, 2011 Author Report Share Posted August 26, 2011 ok thanks , I'll take a lookI'm thinking it's more likely it's a brake fluid warning that's flashing and audible alarmingas the handbrake comes on and goes off ok when I raise or lower the handbrake at a standstilloddly the handbook doesn't have anything to say about audible alarms or flashing lampbrake fluid level is topped up btw, just this strange bodge to the fluid reservoirmaybe a photo would help ? Quote Link to comment Share on other sites More sharing options...
rattyvee Posted August 27, 2011 Author Report Share Posted August 27, 2011 ok, actually the handbook says a flashing lamp means brake fluid level low , see main dealer immediately uh ohthe fluid level in he reservoir looks ok, must find a camera and out pics up asap, I'm round at gf's and she hasn't a digicam ... Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted August 27, 2011 Report Share Posted August 27, 2011 Sounds like the level sensor in the res is knackered then. Quote Link to comment Share on other sites More sharing options...
rattyvee Posted August 27, 2011 Author Report Share Posted August 27, 2011 could be. does this look like a normal lupo reservoir to you folks ?there's a pipe coming off the inside of the plastic reservoir at the top opposite the connector, that's go a crimped off bit of metal on it , doesn't look factory standard issue somehow ... cheers ! Quote Link to comment Share on other sites More sharing options...
jon_273 Posted August 28, 2011 Report Share Posted August 28, 2011 Yes thats normal, on Lupos with a hydraulic clutch thats where the clutch pipe connects to. Quote Link to comment Share on other sites More sharing options...
rattyvee Posted September 20, 2011 Author Report Share Posted September 20, 2011 @Jon_273 Thanks ! That's really helpful@Defcon5I replaced the top cap & float etc, no differenceAs I see it from the current flow diagrams on Elsawin diagram No 12/4 , both the fluid level switch and handbrake switch connect the signal wire to earth when either the handbrake is on or the brake fluid level is low. In fact both those circuits join together as a brown/yellow 0.35 wire to the dash insert pin 29.That common signal wire to the dash is not connected to earth with handbrake down, so neither circuit is connecting to earth.Disconnecting the pin29 means it cannot detect either switch or circuit being connected to earth.With pin 29 disconnected, as soon as I rev the engine (handbrake off too) I get bleeping and red brake lamp warning exclamation flashing on the dash, bleeping ends but light stays on.Unless my logic is flawed (somebody please say if it is !) there must be something else can trigger this ?Flashing lamp & bleeping can mean something other than handbrake or brake fluid ?Further worry is being caused by the audible buzzer (H11) being listed as going off as an OIL PRESSURE alarm !!!!????but surely that would also trigger an oil warning lamp (K3)?could the buzzer be anything else ?oil pressure ?seatbelts ?lights left on ?Help ! Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted September 20, 2011 Report Share Posted September 20, 2011 Not as far as I know - if you have disconnected it, then I would expect it to set the warnings off tbh. Quote Link to comment Share on other sites More sharing options...
rattyvee Posted September 20, 2011 Author Report Share Posted September 20, 2011 ok, thanks for the pointerso , would you also expect it to set warnings off if connected to earth instead ? Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted September 20, 2011 Report Share Posted September 20, 2011 Getting a bit technical for me now, but if the ECU isnt receiving the correct signal (or no signal at all) I would expect the same warnings as if the sensor was working and detecting a fault.Cant really be any more help Im afraid Quote Link to comment Share on other sites More sharing options...
rattyvee Posted September 20, 2011 Author Report Share Posted September 20, 2011 Yeah, not my strong point either.The circuit diagram shows the switches :dumping a signal to earth (handbrake on or fluid low)ordisconnectedwhich makes me wonder if this is nothing to do with brake fluid or handbrakeI've replaced both switches & checked the wiring to both circuitsand now stumped. I can see why a handrake audible alarm would wait for the ECU to register movement before bleepingbut why when I rev the engine at a stand-stillfwiw VAG just said 'you need a new handbrake switch' , so I got one, and no differencemaybe I have to hand it over to VAG for diagnosis ?any idea what they'd charge me anyone ? Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted September 20, 2011 Report Share Posted September 20, 2011 Where do you live? Someone local may have VAGCOM Quote Link to comment Share on other sites More sharing options...
rattyvee Posted September 20, 2011 Author Report Share Posted September 20, 2011 I live in Lancashire m61 areais there a register of VAGCOM folk ? that would be great if someone local knows how to use it ![i have a VAG305 scanner , which worked great when I needed to clear the airbag lampbut doesn't find anything other than SRS / ABS / ENGINE and auto gearbox faultsit's not finding any engine codes] Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted September 20, 2011 Report Share Posted September 20, 2011 Well if its finding ABS faults that may be your problem Quote Link to comment Share on other sites More sharing options...
Blitzerman Posted September 20, 2011 Report Share Posted September 20, 2011 Ermmmmm i had very low oil once, went round a corner oil warning lamp came on and the buzzer came on. and i dont necessarily think oil pressure alarm would trigger oil low level warning :/ as u cud have no pressure but still have lots of oil...ermmm... checked to see if the bulb is working for low level oil?. May have gotten low once adn the bulb blew or something, could be still blown, and the car thinks its still got no oil? i would imagine the circuit runs through the bulb in the dash like the Airbags and the alternator circuit do aswell like if the alternator light is on, or blown. theres no power charging your battery, so maybe its thinking theres no oil hence there being no bulb to complete the circuit :S if that makes sense, but thats a stab in the dark really, not 100% if runs through the bulb :/ Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted September 21, 2011 Report Share Posted September 21, 2011 Blitzerman, its his handbrake light that is illuminating, not oil light. Quote Link to comment Share on other sites More sharing options...
Blitzerman Posted October 4, 2011 Report Share Posted October 4, 2011 (edited) Blitzerman, its his handbrake light that is illuminating, not oil light.my bad Lol. duno where i got the oil thing from thenahh i got it from thiscould the buzzer be anything else ?oil pressure ?seatbelts ?lights left on ?Help !and i said about buzzer also sounds for low oil, as i was saying maybe the low oil level bulb has blown, but buzzer is still sounding thinking that its got a functioning bulb. but yahh Edited October 4, 2011 by Blitzerman Quote Link to comment Share on other sites More sharing options...
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