Temp light and oil indicator on

Asked by Landerxyz May 20, 2018 at 07:35 PM about the 2003 Volkswagen Jetta GL 2.0 Sedan

Question type: Maintenance & Repair

Please help, I have a 2003 Volkswagen Jetta. It started
with the oil indicator flashing. I changed the oil
immediately but the oil indicator was still on. Now the
temp light come up when I start the cat even though the
temp is low coupled with check engine sign

2 Answers

80

Check the fuse box on top of the battery. The first one, should be around 140A goes to the alternator. Make sure there is no corrosion on it and that the wire looks good. I think the alternator wire is prone to corrosion and it causes a high current condition at that fuse. Due to the increased current, the alternator sends too much current through the dash, which also contains one of the field wires from the alternator feeding your battery light on the dash. This will cause the dash to start acting up, usually just before the fuse blows. I had to replace the dash as well as run a new, thicker alternator wire (which is also black from the factory!!! major safety problem i think if you're working on it and don't know.

Your Answer:

CarGurus Experts

  • #1
    Deathjam4
    Reputation
    12,620
  • #2
    Goodwrench707
    Reputation
    5,410
  • #3
    o_jayne
    Reputation
    2,680
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Volkswagen Jetta GLI
3 Great Deals out of 383 listings starting at $5,499
Used Volkswagen Passat
16 Great Deals out of 402 listings starting at $4,700
Used Honda Civic
180 Great Deals out of 3,705 listings starting at $1,995
Used Honda Accord
40 Great Deals out of 910 listings starting at $1,599
Used Toyota Camry
52 Great Deals out of 985 listings starting at $2,212
Used Toyota Corolla
108 Great Deals out of 2,035 listings starting at $2,795
Used Volkswagen Golf
26 Great Deals out of 444 listings starting at $3,987
Used Hyundai Elantra
163 Great Deals out of 3,544 listings starting at $2,995
Used Volkswagen Golf GTI
25 Great Deals out of 608 listings starting at $4,900
Used Nissan Altima
22 Great Deals out of 716 listings starting at $1,400
Used Mazda MAZDA3
74 Great Deals out of 1,510 listings starting at $2,495
Used BMW 3 Series
71 Great Deals out of 1,176 listings starting at $1,995
Used Nissan Sentra
77 Great Deals out of 1,812 listings starting at $2,195
Used Audi A4
43 Great Deals out of 698 listings starting at $4,750

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.