Engine Ignition Coil - Bare Positive (red) Wire

LeonD · May 28, 2024

- Good morning, everyone. I hope you all had a nice Memorial Day weekend in the US. This morning, I was planning to change my oil. I removed the engine cover and noticed that some of the insulation on the underside of the cover is missing. Hmm, weird (see the first picture). As I moved to the passenger side of the engine/cylinder head cover, I noticed that one of the positive (red) wires is bare and mostly stripped on one of the engine ignition coils, and I found the missing insulation. The insulation does not seem to be burned. Mice? Has anyone experienced something similar?

I have contacted the dealership. Thanks in advance.

Shaky · May 28, 2024

Any droppings evident ??

Does look like mice, they love to chew insulation. Apparently something in the plastic tastes nice.

ECrider · May 28, 2024

Shaky said:
Any droppings evident ??

Does look like mice, they love to chew insulation. Apparently something in the plastic tastes nice.

Think it's the soy

Jean Mercier · May 28, 2024

LeonD said:
- Good morning, everyone. I hope you all had a nice Memorial Day weekend in the US. This morning, I was planning to change my oil. I removed the engine cover and noticed that some of the insulation on the underside of the cover is missing. Hmm, weird (see the first picture). As I moved to the passenger side of the engine/cylinder head cover, I noticed that one of the positive (red) wires is bare and mostly stripped on one of the engine ignition coils, and I found the missing insulation. The insulation does not seem to be burned. Mice? Has anyone experienced something similar?

I have contacted the dealership. Thanks in advance.

Could be weasel also, or any other rodent!

LeonD · May 28, 2024

Shaky said:
Any droppings evident ??

Does look like mice, they love to chew insulation. Apparently something in the plastic tastes nice.

No droppings are evident. All the insulation from the engine cover are nice little bites. If it is a mouse he crewed away the insulation, left it, and went straight for the red jacket on the wiring, leaving the copper wire mostly in tact.

LeonD · May 28, 2024

ECrider said:
Think it's the soy

Its my understanding that BMW uses only gluten based products in their wiring harnesses.

rur42 · May 28, 2024

Looks like mice to me as well. They like to chew the insulation on my JK as well, they're obviously partial to off road vehicles.

Roach · May 28, 2024

My bet is its rodent. Happened a few times to our cars. The soy used in the insulation attracts them as well as good nesting material in the area. For me, it happened when the car sat a few days. We were told to put dog hair in a nylon and put in the area where they are nesting/eating. Sounded strange but didn’t have a problem after that.

LeonD · May 28, 2024

UPDATE: Spoke to the RDS dealership, and yep it has happened to a few other Gren owners as well. It is recommended that I replace the coil as a few of the copper strands are broke off.

My wife has a Mini Coper, just checked under her engine cover, and sure enough the little monsters started to chew her insulation as well. Fortunately, no damage to any wiring harnesses.

The dealership suggested peppermint rodent spray. It appears to work.

Ending on a positive note; the oil change was surprisingly easy.

Thank you all.

landmannnn · May 28, 2024

Good call on the peppermint repellent.
I had a nest in the air filter box of my previous vehicle, double cab Nissan, so I need to do something.

MurphyMurph · May 28, 2024

Sorry to hear about the rodent problem. They can be a real pain! I had an issue on my 2005 Tundra where they got into the starter cord and knock sensors that sit under the nice warm intake manifold. I had evidence of rodents in a couple other vehicles but luckily caught it early enough before they started causing real damage. Ended up buying some of theses ultrasonic rodent repellent devices from Loraffe and have not had issues since. For $30 it’s worth a shot.

Amazon.com

Lars · May 28, 2024

LeonD said:
UPDATE: Spoke to the RDS dealership, and yep it has happened to a few other Gren owners as well. It is recommended that I replace the coil as a few of the copper strands are broke off.
...
Ending on a positive note; the oil change was surprisingly easy.

Thank you all.

Did they have parts in-house or do they need to order the coil, etc.? If not, a future update on how long it takes to get parts would be interesting. I just received a part I ordered in mid February (and I feel lucky at that)

Clark Kent · May 29, 2024

Lars said:
Did they have parts in-house or do they need to order the coil, etc.? If not, a future update on how long it takes to get parts would be interesting. I just received a part I ordered in mid February (and I feel lucky at that)

I imagine the coil harness could be obtained from any BMW parts outlet if Ineos don't have local stock. The damaged but functional engine cover would be an Ineos special order but that won't keep the vehicle out of service.

Shopkeep · May 29, 2024

That’s shocking!

LeonD · May 29, 2024

Update: The coil / wiring harness is in the U.S., RDS placed an emergency order, they anticipate delivery tomorrow. Once in hand they will call me. Thanks RDS.

LeonD · Jun 5, 2024

Update: Wiring harness replaced by RDS yesterday. A small rodent with a high price. Some picture attached with some of the codes for the wiring harness in case someone is interested.

Krabby · Jun 5, 2024

Did you buy a cat on the way home to deal with the rodent?

Roach · Jun 5, 2024

I’ve been told that Synthetic animal urine works. I just use pet hair in a nylon stocking zip tied under the hood. I had a few grand caused by a rodent on a new 911 and the brake line on a Benz destroyed by these guys. Hair of the dog that bit you did the trick

LeonD · Jun 5, 2024

Krabby said:
Did you buy a cat on the way home to deal with the rodent?

No cat, but I did assemble a fine mouse trap. Works like a charm.

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Engine Ignition Coil - Bare Positive (red) Wire

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