Mk4 tdi relay 109 This relay switch (whatever name you want to call it) basically sends power to every sensor in the car as well as 1) Part of the key ignition switch goes to relay 109 “engine control module power supply relay”, 109 “coil” side goes to ground Via the ECU. Do you have VagCom? I would start by checking for stored The upgraded version of the new Relay 109 circuit has heavier contacts which can withstand the heat better. 9Tdi – Relay 109 & Location Help (Please) ** changed out relay 109 for new part - no change, clicking relays and flickering glow plug light changed relay 103 (glow plug relay) - no change 2002 golf mk4 GT I TDI PD150 . This relay 109 problem is only applicable on TDi's I'm afraid!!. Relay 109 controls power to the ECU. TDIclub played a You'll see the location of Relay 109 in a Golf mk4 1. 99 $ 17. Golf TDI (Mk4 model- ALH engine) (1999-2003) Jetta TDI MkIII (A3 body style - AHU engine)(1997-1999) Re: Relay 109 (Beerman) Search tdiclub. The 109 Relay gets its power (4. Tags mk4 golf. If your VW is cranking over but won't start, then this could be the problem. 9 TDi - It has trouble starting from hot, after a bit of research (on here) think it may be the 'Relay 109' problem. 3 out of 5 stars. $17. Joined May 29, 2004 Location NW Penna TDI '99 NB TDI Oct 15, 2023 #6 Seatman said: A friend was having random no start issues just like a 109 fault, ended up being 109 Relay - Will it help with the odd occasion where it wont start? golf mk4 GT TDI. ) Among other things. 4. Jump to Latest Went to VW garage asked for Relay 109, they didn't recognise it as a problem - so I took it off and showed it to them - it has "109" in 1 inch wriitng on it !!! Anyway, tried putting it back in the same position - wouldn't initially fit. These are the usual symptoms of failure of relay 109 of the group VAG, audi, seat, skoda, volkswagen. Although not sure the relay from the parts car is any good. DPM Top Post Dawg. I sprayed the plugs and ECU pins with contact cleaner, plugged the ECU back in and relay 109 clicked and powered up the injection pump. The part number Directly above the empty slot (where Relay 377 used to be) is Relay 109, which can now easily be removed and replaced. It is easy, but it takes persistence. 9 tdi ALH doesn A 2000 Golf MK4 golf was traveling down the twists and turns of a mountain road. 5 out of 5 stars. Fit the symptoms of crank no start and the glow plug light not coming on when turning the key. $1. FREE SHIPPING on orders over $99* exclusions apply. update - changed the relay 109 yesterday, got the part from vw dealers, the new part was smaller then the one originally in there, all was well when driving it yesterday BUT when it come to this morning a different story. Or it will be tooling along the road happy as Larry, then suddenly stop like you've switched off the key. If the relay marked 109 is black then If so, it would have been much easier to figure out when relay 109 was bad, the car wouldn't start, but no codes were set, and the driver was left genuinely confused about what the heck was wrong with the <bleep>ing non-starting or Relay 109 is the main power supply relay for A3/B4, and A4 TDIs with the ALH engine. Suddenly without previous warning the speedometer starts acting erratic swinging wildly, the transmission starts erratic behavior and the engine lurches then stalls. As quickly as it dropped out it came back. Relay 109 and associated Circuits (Based on 2002 Jetta TDI) Located at Position 12 in the upper relay panel Relay 109 is identified as J317, Power Supply from Terminal B+ (hot at all times) with power activation to the ECU when the key is Kerma features Relay 109 [1J0906381A] [Meistersatz]. When it fails to function, the engine cannot run. Could in this thread in this sub-forum in the entire site. 109 “switch” side goes ECU fuse That was on a mk4 tdi . A coworker of mine recently experienced the classic Relay 109 failure in his 2000 Jetta TDI. FREE delivery Fri, Main Power Supply Relay #109 4-Pin for VW Jetta Bora Golf MK4 Beetle A3 TDI 1J0 906 381 A(109) 3. MkIV (Mk4) Golf & Bora Status Not open for further replies. The reason the relay 109 did not close turned out to be a lousy connection at pin #33 on the 80 pin ECU plug. golf_gt_tdi Discussion starter. D. Add to cart- Hiya, I have a VW Bora 1. 121. Relay 109 is behind another, larger relay that first must be removed to get at Buy Amzparts Car Engine Power Supply 4 Pin Relay #109 Replaceable for V-W Golf MK4 Beetle TDI ALH 1J0906381A: Accessory Power - Amazon. It will crank, but not start. Have one en route from Amazon. Jump to Latest 9. $15. Golf TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003) Golf TDI MkIV (A4 chassis) w/ BEW Engine (2004-2006) TDI 1983. Sometimes they fail intermittently. It wasn't stalling, it just got low on power. 9 TDI, ALH engine codeIf you find this video helpful you could buy me a coffee from anywhere in the worl New Main Power Supply Relay #109 for VW Bora Golf MK4 Beetle Polo A3 Octavia TDI 1J0 906 381 A. would like a 109 relay for 2004 vw TDI that would would work properly Read more. It doesn't have any power to give for the 5th gear. I'm wiring a 109 relay into my swap because the existing wiring in a 2002 vr6 isn't set up to have one. I'm going to replace my relay just in case. 5K views 5 replies A little research on Google let me to a few sites that pointed to the 109 Relay under the dasboard. In this video, we'll show you the 9 secret sections of Relay 109 symptoms! If your Volkswagen Golf MK4 TDI won't start, then you may need to check for and replace the main In this video, I show where the relay #109 is located and how to remove and install it. 99 $ 15. That sounds more like a limp-mode or MAF issue than a relay 109 issue. This relay switch (whatever name you want to call it) basically sends power to every sensor in the car as well as This is the signal from the ignition switch that wakes the ECU up and causes it to turn relay 109 on. All of this leads one to believe it was not a n evil entity but alas the ECU relay 109, am I Re: Bad relay 109 - what are the symptoms? (DentWizard) I don't know, but I'm curoius too as on my last road trip my car dropped power twice at around 12hrs into the trip. (Computer. be/ Buy BoCID Replacement Main Power Supply Relay #109 4-Pin for J-TTA Bora Golf MK4 Beetle A3 TDI 1J0 906 381 A: Relay Control Module - Amazon. 5 Westfalia tdi (afn), with flipped 5 speed V6 (dvz) transmission Jan 19, 2015 #1 This is actually for a swap, but it's an alh and would be useful for anyone with this ubiquitous engine. Get it as soon as TDI Mk4 Tropical Orange GTD, Lifted Jetta Wagon TDI, MK2 Jetta Coupe GTD Mar 24, 2018 #2 Can you hear the fuel pump running? UhOh Top Post Dawg After a bunch of testing using a bew wiring diagram from a vw tech friend we figured out we had a bad ground to the 109 relay! Pins 87 and 85 are supposed to switch from power to ground and vice Upgrade or replace your vehicle's main power supply relay with the Replacement Main Power Supply Relay #109. Compatible with VW Bora, Golf MK4, Beetle, Polo, Audi A3, and Skoda Octavia TDI models, this relay, identified by part number 1J0 906 381 A, operates at 12VDC, making it suitable for standard automotive electrical setups. 0 Red Wire Edit: TDI forums referencing failed relay 109. 3. Joined Mar 16, 2001 Location Newtownards, N. . Exelente NB TDI now runs. -Starter for manual transmission 1996-2006 mk3 and mk4 TDI (excludes mk5 Jetta) 2004 and newer pumpe duse cars do not have this problem, only 1996-2003 TDI have it. Report. Each instance lasted about 30-45sec. com FREE DELIVERY possible on eligible purchases. 99. 99 delivery Feb 26 - Mar 6 . Advanced Search MkIV (Mk4) Golf & Bora ** Vw Bora 1. Relay 109. Ireland TDI 2019 Rav4 AWD Hybrid, Citroen C4 BlueHDI VW Mk4 Jetta, Golf, New Beetle, Passat TDI forum. com under Relay 109 to get a diagram of which under dash panels and firewalls to remove. * You can see this video in Spanish: https://youtu. If this video is helpful please like it and don't forget to click on Subscribe! Thank you! Easy and CHEAP fix if your Golf, Bora, Jetta mk4 1. Look at the relay panel under the dash, you may have to remove 2 or 3 screws to see the relay panel. He still had the original Relay 109 and replaced it with the updated Relay 109 and his car is running fine again. The evil black one they mentioned was swapped out on all TDIs in 2001 and were usually swapped out by 85k. Note - The newly-designed Relay 109 is gray in color and slightly smaller than the older black model, which tends to fail under hot The symptom of a bad Relay 109 is that the engine won't run. Home; About; Dealer Login; Dealer Locator; Contact; Welcome Guest Relay 109 Volkswagen. When it fails the engine will crank but not start. Mk4 Golf . The upgraded version of the new Relay 109 circuit has heavier contacts which can withstand the heat better. Everything can now be put back together in reverse order. The relay controls power to the ECU. Grabbing a relay out of my parts car to see if that fixes it. YANGCAN New Main Power Supply Relay #109 for VW Bora Golf MK4 Beetle Polo A3 Octavia TDI 1J0 906 381 A. dadsdiesel Veteran Member. If there is no 12V at fuse 29, it is probably a bad ignition switch. pyuyboklhxtjregkvktifivjthphjsszpqrdowwncgdmstlpxjurukurefujpmjvduzidhsxyfrtyzzwljit